Which Includes Current And Voltage Electrodes Patents (Class 324/444)
  • Patent number: 10826091
    Abstract: A fuel cell that can have a voltage-detection cell connector reliably held thereon without the thickness of the fuel cell increased to a thickness of greater than that originally required to generate power. The fuel cell includes a recess portion in which a cell connector is adapted to be inserted. In the recess portion, a guide portion, which can guide a cell connector being inserted into the recess portion, is formed of a part of a separator (or a second extending portion thereof). In a portion of the recess portion opposite the second extending portion, a protrusion that forms a part of an insulating resin sheet, which is arranged between a pair of separators, protrudes toward the second extending portion. A to-be-crimped portion of the cell connector inserted in the recess portion is pressed against the second extending portion by the protrusion so that its stable posture is held.
    Type: Grant
    Filed: November 2, 2018
    Date of Patent: November 3, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Masahiro Imanishi, Nobuaki Nonoyama
  • Patent number: 10656151
    Abstract: A lateral flow diagnostic assay device is defined by a substrate having a top surface that further includes a sample addition zone for receiving a sample, a transport and reaction zone, and a wicking zone. Each of the sample addition zone, reaction and transport zone and wicking zone are disposed on the top surface of the substrate and fluidically interconnected by means that permit lateral capillary flow along at least one fluid flow path from the sample addition zone to the wicking zone. The assay device further includes a capillary vent disposed in relation to the wicking zone, the capillary vent having an overall length and cross sectional area that creates a backpressure so as to control the flow rate of a sample applied to the assay device.
    Type: Grant
    Filed: January 27, 2017
    Date of Patent: May 19, 2020
    Assignee: ORTHO-CLINICAL DIAGNOSTICS, INC.
    Inventor: David A. Heavner
  • Patent number: 10261067
    Abstract: A nanopore FET sensor device and method of making. The nanopore FET sensor device includes a FET device stack of material layers including a source, channel and drain layers, and a nanoscale hole through the FET device stack to permit flow of strands of molecular material, e.g., DNA, therethrough. The perimeter of the nanoscale hole forms a FET device gate surface. The source and drain layers are provided with respective contacts for connection with measuring instruments that measure a flow of current therebetween. The molecular strands having charged portions pass from one side of a wafer substrate to the other side through the (nanopore) gate and modulate the current flow sensed at the source or drain terminals. The sensor collects real-time measurements of the current flow modulations for use in identifying the type of molecule. Multiple measurements by the same nanopore FET sensor are collected and compared for enhanced detection.
    Type: Grant
    Filed: December 27, 2017
    Date of Patent: April 16, 2019
    Assignee: International Business Machines Corporation
    Inventors: John U. Knickerbocker, Effendi Leobandung
  • Patent number: 10066335
    Abstract: A device for sensing the electrical conductivity of a liquid, particularly that of the washing bath in a washing machine, including an electrically insulating supporting casing through which first and second electrodes intended to contact the washing bath extend to the outside, electrical power supply and signal acquisition and processing circuit devices housed at least in part in the supporting casing and coupled to the electrodes, and signal coupling and galvanic isolation devices, interposed between these circuit devices and the electrodes and also housed in the casing, and including at least a first and a second capacitor, each of which is interconnected in series between one of the electrodes and a corresponding terminal of the circuit.
    Type: Grant
    Filed: October 26, 2017
    Date of Patent: September 4, 2018
    Assignee: BITRON S.P.A.
    Inventor: Fabio Arpino
  • Patent number: 9945836
    Abstract: A nanopore FET sensor device and method of making. The nanopore FET sensor device includes a FET device stack of material layers including a source, channel and drain layers, and a nanoscale hole through the FET device stack to penult flow of strands of molecular material, e.g., DNA, therethrough. The perimeter of the nanoscale hole forms a FET device gate surface. The source and drain layers are provided with respective contacts for connection with measuring instruments that measure a flow of current therebetween. The molecular strands having charged portions pass from one side of a wafer substrate to the other side through the (nanopore) gate and modulate the current flow sensed at the source or drain terminals. The sensor collects real-time measurements of the current flow modulations for use in identifying the type of molecule. Multiple measurements by the same nanopore FET sensor are collected and compared for enhanced detection.
    Type: Grant
    Filed: April 23, 2015
    Date of Patent: April 17, 2018
    Assignee: International Business Machines Corporation
    Inventors: John U. Knickerbocker, Effendi Leobandung
  • Patent number: 9776183
    Abstract: Methods and systems for controlling fluid flow through a cartridge for use in an assay of a fluid sample for detection of a target analyte. In one aspect, the cartridge includes a microfluidic device having a network of microfluidic channels, one or more reservoirs and one or more actuatable valves for controlling fluid flow from the reservoirs through the microfluidic channels. In some embodiments, the valve includes a deformable membrane movable between a closed configuration in which the membrane seals against the microfluidic device inhibiting fluid flow and an open configuration moved away from the microfluidic device to allow fluid flow through the microfluidic channels. Other valve embodiments utilize frangible membranes or user-removable membrane.
    Type: Grant
    Filed: December 12, 2016
    Date of Patent: October 3, 2017
    Assignee: Bio-Rad Laboratories, Inc.
    Inventors: Sepehr Kiani, Tony Hung, Peter Stokes, Julia Sharpe
  • Patent number: 9685499
    Abstract: A capacitive device includes a first electrode comprising a nanosheet stack and a second electrode comprising a nanosheet stack, the second electrode arranged substantially parallel to the first electrode. A first conductive contact is arranged on a basal end of the first electrode, and a second conductive contact is arranged on a basal end of the second electrode.
    Type: Grant
    Filed: September 21, 2016
    Date of Patent: June 20, 2017
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Zhenxing Bi, Kangguo Cheng, Dongbing Shao, Zheng Xu
  • Patent number: 9490873
    Abstract: Methods and apparatus for a near-field signal system to generate signals underwater for navigation and/or communication. In one embodiment, a system includes a signal processing module coupled to a first antenna to transmit near-field signals underwater and a second antenna to receive near-field signals underwater transmitted by the first antenna. In one embodiment, a wetsuit includes an integrated near-field signal system.
    Type: Grant
    Filed: October 2, 2014
    Date of Patent: November 8, 2016
    Assignee: Raytheon Company
    Inventors: Frederick B. Koehler, Thomas P. Mccreery, Robert Rinker, Darrell R. Rogers, Ross D. Rosenwald, Terry M. Sanderson, David R. Sar, Ernest D. Fasse
  • Patent number: 9458488
    Abstract: Provided are point of care sensor systems that include portable readers and disposable cartridges for receiving and analyzing samples. A cartridge may be equipped with one or more sensor channels, each containing one or more sensors. After providing a sample to a cartridge, the cartridge can be inserted into a reader, which can interact with the cartridge to perform on-cartridge sensing and receive signals indicating the presence and/or quantity of one or more targets in the sample. Examples of cartridges can include cardiac panels, sepsis panels and the like. In some embodiments, the same sensor hardware may be configured for multiple measurements of different targets conducted at different time frames. Also provided herein are novel on-cartridge solid and liquid reagent storage and delivery mechanisms.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: October 4, 2016
    Assignee: Nanomix, Inc.
    Inventors: Bradley N. Johnson, Jui-Ming Yang, Kanchan A. Joshi, Ray R. Radtkey, Garrett Gruener, Sergei Skarupo
  • Patent number: 9299280
    Abstract: A substrate of an electronic device may include a first test region and a second test region to measure resistance at a connection portion. The first test region and the second test region each includes a plurality of measuring pad portions, a protective layer disposed on the plurality of measuring pad portions, and a contact assistance member disposed on the protective layer. The protective layer in the first test region includes a first contact hole exposing the plurality of measuring pad portions. The contact assistance member in the first test region contacts the measuring pad portion exposed through the first contact hole. The protective layer in the second test region includes two second contact holes exposing one measuring pad portion, and the contact assistance member in the second test region contacts the one measuring pad portion through the two second contact holes.
    Type: Grant
    Filed: August 29, 2013
    Date of Patent: March 29, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventor: Won-Gu Cho
  • Patent number: 8991156
    Abstract: A method is provided for determining the amount of ammonia which is stored in a storage container by a chemical bond to a solid storage medium, in particular a salt of an earth alkaline metal or the like, and which can be released by supplying heat in order to be supplied to a catalytic exhaust gas purification device of an internal-combustion engine. The storage medium functions as a dielectric of an electric capacitor and the stored amount of ammonia is inferred from the capacity of this capacitor. One wall of the housing of the storage container functions as a first electrode of the capacitor, and, within the storage container, at least one additional electrode is arranged such that at least a partial amount of the storage medium forms the dielectric. The storage container may have an essentially cylindrical shape. Several cylindrical electrodes can be arranged in a coaxial manner.
    Type: Grant
    Filed: November 10, 2011
    Date of Patent: March 31, 2015
    Assignee: Bayerische Motoren Werke Aktiengesellschaft
    Inventors: Ralf Widmann, Thomas Baumeister, Andreas Bruhn, Udo Strathoff
  • Patent number: 8988083
    Abstract: A conductivity sensor, comprising an electrode structure of four concentric electrodes, which are arranged on an end face of a support body. The electrodes are electrically insulated from one another. The electrodes have an equal, constant area in order to claim a space requirement as small as possible for the electrode structure.
    Type: Grant
    Filed: October 18, 2011
    Date of Patent: March 24, 2015
    Assignee: Endress + Hauser Conducta Gesellschaft fur Mess- und Regeltechnik mbH + Co. KG
    Inventors: Marco Volker, Andreas Eberheim, Stefan Muller
  • Patent number: 8975901
    Abstract: Measurement devices, systems, and methods to measure a high field conductivity of a fluid are provided herein. The measurement device includes a fluid cell, a pair of electrodes, a voltage switch, and a measurement unit. The fluid cell is on an inclined plane to receive the fluid. The pair of electrodes are connected to the fluid cell. The pair of electrodes are spaced apart from one another to receive the fluid therebetween and positioned parallel to one another to pass an electrical current therethrough. The power unit provides a high voltage power supply to one electrode of the pair of electrodes. The measurement unit measures the electrical current that passes between the pair of electrodes through the fluid.
    Type: Grant
    Filed: October 24, 2011
    Date of Patent: March 10, 2015
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Henryk Birecki, Omer Gila, Michael H Lee, William D Holland
  • Patent number: 8928328
    Abstract: A testing device for solid oxide fuel cell (SOFC) is disclosed. The testing device which combines the original cell housing with a four-point probe equipment is set for measuring SOFC MEA. The current collectors on anode and cathode in the original cell housing are respectively replaced by four independent probe units. They are not only to collect current but also to become measuring probes. Therefore, the lateral impedance of anode and cathode can be measured. Furthermore, the local characteristics are examined by open circuit voltage (OCV), I-V curve, and electrochemical impedance spectroscopy (EIS) measurements. The results show that the lateral impedance is substantially varied with temperatures. The distributions of OCV, current density, EIS and cell voltage in long-term test at the center of the cell are different from the edge.
    Type: Grant
    Filed: January 18, 2012
    Date of Patent: January 6, 2015
    Assignee: Institute of Nuclear Energy Research Atomic Energy Council, Executive Yuan
    Inventors: Shih-Wei Cheng, Yaw-Hwa Shiu, Yung-Neng Cheng, Ruey-Yi Lee
  • Publication number: 20140327446
    Abstract: A method of using a sensor comprising a field effect transistor (FET) embedded in a nanopore includes placing the sensor in an electrolyte comprising at least one of biomolecules and deoxyribonucleic acid (DNA); placing an electrode in the electrolyte; applying a gate voltage in the sub-threshold regime to the electrode; applying a drain voltage to a drain of the FET; applying a source voltage to a source of the FET; detecting a change in a drain current in the sensor in response to the at least one of biomolecules and DNA passing through the nanopore.
    Type: Application
    Filed: July 11, 2014
    Publication date: November 6, 2014
    Inventors: Stephen W. Bedell, Christopher D' Emic, Hongbo Peng, Sufi Zafar
  • Patent number: 8648605
    Abstract: This invention provides a sensor having such a structure that the area in which a sensor electrode comes into contact with a liquid, a mist or a gas containing an analyte has been previously specified. The sensor comprises at least an electroconductive first electrode, an electroconductive second electrode, electroconductive first and second wirings connected to the first and second electrodes, and an insulating part for insulating the first and second wirings from each other and from a liquid, a mist or a gas containing the analyte. The insulating part is formed of an organic material. In the first and second electrodes, at least the surface, which comes into contact with a liquid, a mist or a gas containing the analyte, is formed of a material which is insoluble in a liquid or a mist containing the analyte, or is not attacked by a gas containing the analyte.
    Type: Grant
    Filed: September 26, 2008
    Date of Patent: February 11, 2014
    Assignees: Hitachi Chemical Company, Ltd., National Institute of Advanced Industrial Science and Technology
    Inventors: Hidehiro Nakamura, Tooru Nakamura, Yutaka Hayashi, Yuji Kawanishi
  • Patent number: 8566051
    Abstract: A system for detecting and locating a leak through a membrane that includes a detector array and computer. The detector array includes a boundary wire loop, sensors, and leads. The boundary wire loop surrounds the area to be tested and generates electrical tension on the surface of the membrane. The sensors are laid out in a sensor array and are placed on top of a membrane and within the boundary wire loop. The sensors are encased in a plastic covered cable or individual wires which have open ends for their terminations forming a cable so that the sensors made by the open terminations form a chain. Each sensor communicates individually with the computer and the signals from the sensors are used by the computer to perform vector mapping that detects and locates leaks through the membrane.
    Type: Grant
    Filed: January 19, 2011
    Date of Patent: October 22, 2013
    Inventor: Clark Robert Gunness
  • Patent number: 8521442
    Abstract: An exemplary method for measuring the electrical resistance and/or electrical conductivity of solutions, includes: exciting the electrodes with a rectangular shaped, alternating current of a certain frequency fH through a connecting cable; synchronously rectifying a voltage of the electrodes of the measuring cell in response to the alternating current, calculating a first average voltage, dividing the first average voltage by the current amplitude to obtain a first impedance RH; then exciting the electrodes with a rectangular shaped, alternating current of another frequency fL through the connecting cable; synchronously rectifying the voltage of the electrodes in response to the alternating current, calculating a second average voltage, and dividing the second average voltage by the current amplitude to obtain a second impedance RL.
    Type: Grant
    Filed: December 12, 2008
    Date of Patent: August 27, 2013
    Assignee: Mettler-Toledo AG
    Inventor: Changlin Wang
  • Patent number: 8519716
    Abstract: A battery pack includes a voltage detection part configured to detect the voltage of a battery unit including multiple chargeable and dischargeable secondary cells; a current detection part configured to detect a current flowing through the battery unit; a dischargeable capacity calculation part configured to calculate the dischargeable capacity of the battery unit based on the current detected by the current detection part; and a capacity correction part configured to correct the remaining capacity of the battery unit, the remaining capacity including the dischargeable capacity calculated by the dischargeable capacity calculation part, wherein the capacity correction part is configured to correct the remaining capacity based on an estimated dischargeable capacity calculated from the relationship between a preset predetermined voltage and the drop rate of the voltage of the battery unit, in response to the voltage of the battery unit becoming less than or equal to a predetermined threshold.
    Type: Grant
    Filed: January 8, 2010
    Date of Patent: August 27, 2013
    Assignee: Mitsumi Electric Co., Ltd.
    Inventor: Koichi Kurata
  • Patent number: 8482291
    Abstract: A substrate includes a first plate member; a plurality of first electrodes provided on the major surface of the first plate member, the first electrodes including at least one electrode for circuit connection and at least one monitor electrode separate from the electrode for circuit connection; a second plate member; a plurality of second electrodes provided on the major surface of the second plate member; a plurality of solder members provided between the first electrodes and the second electrodes for electrical connection therebetween, repeatedly; and a detector for detecting an electrical disconnection between at least one of the monitor electrode and the second electrode.
    Type: Grant
    Filed: April 28, 2010
    Date of Patent: July 9, 2013
    Assignee: Fujitsu Limited
    Inventors: Nobutaka Itoh, Makoto Sakairi, Mami Nakadate
  • Patent number: 8436622
    Abstract: Disclosed are a measurement method and a measurement apparatus both of which can measure the content of water or an organic acid in a polar organic solvent with high accuracy even when water or the organic acid is contained in the polar organic solvent at a low content. The content of water or an organic acid in a polar organic solvent can be measured by using, as a work electrode, an ISFET electrode in which a thin film comprising an oxide or nitride of a metal or metalloid element belonging to Groups 3 to 15 is formed on a gate.
    Type: Grant
    Filed: December 26, 2008
    Date of Patent: May 7, 2013
    Assignee: Horiba, Ltd.
    Inventors: Yuji Nishio, Yasukazu Iwamoto
  • Patent number: 8427181
    Abstract: A follower amplifier with power supply biased by a controlled voltage source such that the power supply potentials are, for the frequencies of interest, as close as possible to the potential of the follower output. There is proposed a front-end electronic circuit for biopotential and impedance measurements with outstanding performances (very high input impedance and gain very close to unity). Preferably, the explicit guard electrode and the explicit electronic unit at the belt are no longer necessary; all electronics is embedded in units placed directly at the measurement sites. Moreover, the proposed front-end electronic circuit allows a drastic simplification of the cabling and connectors since all units are connected to only one wire (the theoretical minimum) for potential reference and current return. Preferably, this wire does not even require an electrical isolation and can be easily embedded in the textile of a shirt, in a garment, mesh, belt, etc.
    Type: Grant
    Filed: March 10, 2009
    Date of Patent: April 23, 2013
    Assignee: CSEM Centre Suisse d' Electronique et de Microtechnique SA—Recherche et Developpement
    Inventors: Olivier Chetelat, Josep Sola I Caros
  • Patent number: 8368411
    Abstract: The invention relates to a method for the determination of diffusion coefficients and/or exchange coefficient of a material having electronic and ionic conductivity. The material is permeable to at least one gas. It is the object of the invention to provide a cost-effective, accurate method for the determination of the diffusion coefficient and of the surface exchange coefficient which can be carried out in a short time and can thus be used for a screening of materials, in particular for application in the field of permeation membranes. The procedure is followed in accordance with the invention such that a sample of the material is arranged in a measurement chamber and has an electric current passed through it for a determination of the electric resistance. In this respect, a gas mixture in which the respective gas is contained is conducted through the measurement chamber as a gas flow and the partial pressure of the respective gas in the gas mixture is changed periodically at regular intervals.
    Type: Grant
    Filed: July 28, 2008
    Date of Patent: February 5, 2013
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der Angewandten Forschung E.V
    Inventors: Mihails Kusnezoff, Steffen Ziesche, Anne Paepke
  • Patent number: 8324903
    Abstract: Disclosed is an apparatus for sensing the electrical conductivity of fluid wherein when electrodes of the apparatus are exposed to fluid. When the electrodes are exposed to a fluid with a predetermined salinity, a voltage is developed on a capacitor which in turn fires a load, such as a resistive bridge wire. Also disclosed is a testing circuit, whereby the integrity of the circuit can be ascertained without the necessity of actually firing the circuit.
    Type: Grant
    Filed: December 23, 2009
    Date of Patent: December 4, 2012
    Assignee: Conax Florida Corporation
    Inventor: Andre Cournand
  • Patent number: 8258796
    Abstract: A system for testing an electronic device comprises a first output, a second output, and a third output connected to a positive input, an identification input, and a negative input of the electronic device, respectively. The system further comprises a switch comprising at least two dynamic contacts, each of which is connected to a resistor for the use of identification.
    Type: Grant
    Filed: April 22, 2010
    Date of Patent: September 4, 2012
    Assignee: Chi Mei Communication Systems, Inc.
    Inventors: Chun-Chin Lai, Jiann-Chyi Rau
  • Patent number: 8093903
    Abstract: A system and method of processing a test current for an analyte measurement in a fluid using a test strip and a test meter are disclosed. The method comprises sampling the test current at a pre-determined sampling rate to acquire a plurality of A/D conversions. The method also comprises filtering out at least a highest magnitude A/D conversion and a lowest magnitude A/D conversion leaving a plurality of accepted A/D conversions. Further, the method comprises calculating an average or a summation of the plurality of accepted A/D conversions and converting the average or the summation into a glucose concentration.
    Type: Grant
    Filed: June 30, 2008
    Date of Patent: January 10, 2012
    Assignee: LifeScan, Inc.
    Inventors: Ulrich Kraft, James Christol, Manfred Ebner
  • Publication number: 20110279125
    Abstract: A method of using a sensor comprising a field effect transistor (FET) embedded in a nanopore includes placing the sensor in an electrolyte comprising at least one of biomolecules and deoxyribonucleic acid (DNA); placing an electrode in the electrolyte; applying a gate voltage in the sub-threshold regime to the electrode; applying a drain voltage to a drain of the FET; applying a source voltage to a source of the FET; detecting a change in a drain current in the sensor in response to the at least one of biomolecules and DNA passing through the nanopore.
    Type: Application
    Filed: May 17, 2010
    Publication date: November 17, 2011
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Stephen W. Bedell, Christopher D' Emic, Hongbo Peng, Sufi Zafar
  • Patent number: 8030942
    Abstract: An electrochemical cell has two terminals. One of the terminals is connected to a pulse-width-modulated (PWM) power supply and to a voltmeter. The other terminal is connected to circuitry capable of switching between amperometric and potentiometric measurement modes. A sequence of successive approximations permits selection of a PWM duty cycle giving rise to a desired voltage at the terminal connected with the power supply. In this way a stable excitation voltage is supplied to the cell even in the face of supply voltage instability or drift or instability in electronics coupled with the cell.
    Type: Grant
    Filed: November 8, 2007
    Date of Patent: October 4, 2011
    Assignee: Agamatrix, Inc.
    Inventors: Steven Diamond, Martin Forest, Baoguo Wei
  • Patent number: 8026731
    Abstract: Apparatus and methods are disclosed for obtaining an image of the impedance properties of an object by inferring a measure of straight-line path impedance along a plurality of paths from a plurality of current amplitude and phase measurements made between combinations of electrodes placed at selected points, and/or from measurements of the intensity of the electromagnetic signal emitted when an alternating current is made to resonate along the straight line path.
    Type: Grant
    Filed: April 20, 2007
    Date of Patent: September 27, 2011
    Inventor: Jack Scott Emery
  • Patent number: 8018233
    Abstract: The evaluation method of a separator for a nonaqueous electrolyte battery according to the present invention includes: placing opposite an upper jig 21 serving also as a conductive electrode and a lower jig 23 serving also as a conductive electrode in both sides of the separator sample 22; and measuring the relationship between an applied voltage and a passed current between the upper jig 21 and the lower jig 23 while applying a pressure to between the upper jig 21 and the lower jig 23 to evaluate the separator. At this time, by fitting a foreign material 28 in any shape between the separator sample 22 and one of the upper jig 21 and the lower jig 23, an evaluation of the separator simulating the presence of a foreign material affecting adversely the separator can be performed.
    Type: Grant
    Filed: June 25, 2008
    Date of Patent: September 13, 2011
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Masato Iwanaga, Noriko Yamashita
  • Patent number: 7884614
    Abstract: This invention relates to a device of electrodes for measuring water content in foundry sand, an apparatus for measuring water content in foundry sand, and a method and an apparatus for supplying water to a sand mixer. When the prior art device for measuring water content in the foundry sand is disposed in it, the size or shape of the device of the electrodes is limited.
    Type: Grant
    Filed: July 6, 2005
    Date of Patent: February 8, 2011
    Assignee: Sintokogio, Ltd.
    Inventors: Hisashi Harada, Tadashi Nishida, Kozo Sugita
  • Publication number: 20110018543
    Abstract: The invention is directed to an electrochemical cell for electrochemical impedance spectroscopy, the use thereof, an electrochemical impedance spectroscopy method, and the use of a flexible magnet. The electrochemical cell of the invention comprises—a housing defining a space comprising an electrolyte, a counter electrode and optionally a reference electrode, wherein said counter electrode and said reference electrode are arranged to be in electrical contact with said electrolyte during use; —an opening in said housing allowing the electrolyte to be in electrical contact with a substrate; and—a flexible magnet for attaching said electrochemical cell to said substrate. The EIS method of the invention comprises—attaching an electrochemical cell according to invention to said substrate substrate; —filling said electrochemical cell with electrolyte, such that said counter electrode and said reference electrode are immersed in said electrolyte; and—measuring the impedance of said substrate.
    Type: Application
    Filed: December 5, 2008
    Publication date: January 27, 2011
    Applicant: Nederlandse Organisatie voor toegepast-natuurweten schappelijk onderzoek TNO
    Inventors: Tom Bos, Sibo Buter
  • Publication number: 20100259271
    Abstract: Disclosed are a measurement method and a measurement apparatus both of which can measure the content of water or an organic acid in a polar organic solvent with high accuracy even when water or the organic acid is contained in the polar organic solvent at a low content. The content of water or an organic acid in a polar organic solvent can be measured by using, as a work electrode, an ISFET electrode in which a thin film comprising an oxide or nitride of a metal or metalloid element belonging to Groups 3 to 15 is formed on a gate.
    Type: Application
    Filed: December 26, 2008
    Publication date: October 14, 2010
    Inventors: Yuji Nishio, Yasukazu Iwamoto
  • Patent number: 7788047
    Abstract: Disposable, pre-sterilized, and pre-calibrated, pre-validated conductivity sensors are provided. These sensors are designed to store sensor-specific information, such as calibration and production information, in a non-volatile memory chip on the sensor on in a barcode printed on the sensor. The sensors are calibrated using 0.100 molar potassium chloride (KCl) solutions at 25 degrees Celsius. These sensors may be utilize with in-line systems, closed fluid circuits, bioprocessing systems, or systems which require an aseptic environment while avoiding or reducing cleaning procedures and quality assurance variances.
    Type: Grant
    Filed: April 27, 2007
    Date of Patent: August 31, 2010
    Assignee: SenCal LLC
    Inventors: Karl G. Schick, David Uhen
  • Patent number: 7772854
    Abstract: An improved contacting-type conductivity measurement system and method are provided. A first conductivity measurement is obtained by driving a contacting-type conductivity sensor with an excitation voltage at a first frequency, a second conductivity is obtained by driving the contacting-type conductivity sensor with the excitation voltage at a second frequency. The first and second conductivity measurements are used to provide a more accurate conductivity output.
    Type: Grant
    Filed: September 7, 2007
    Date of Patent: August 10, 2010
    Assignee: Rosemount Analytical Inc.
    Inventor: Behzad Rezvani
  • Publication number: 20100156426
    Abstract: An apparatus for sensing a leakage current of a battery comprises a floating capacitor charged with a voltage detected from a cathode or anode terminal of a battery; a terminal selection switching unit for selecting a voltage detection path for the cathode or anode terminal; a charge switching unit for charging the floating capacitor with a detection voltage of the cathode or anode terminal, detected through the selected voltage detection path; a polarity reverse switching unit for reversing a polarity of the detection voltage of the anode terminal charged to the floating capacitor; and a leakage current determining unit for sensing the detection voltage of the cathode terminal charged to the floating capacitor and the polarity-reversed detection voltage of the anode terminal charged to the floating capacitor to calculate a leakage resistance, and comparing the calculated leakage resistance with a criterion insulation resistance to determine whether a leakage current occurs.
    Type: Application
    Filed: January 29, 2010
    Publication date: June 24, 2010
    Inventors: Ju-Hyun KANG, Dal-Hoon Lee, Jee-Ho Kim, Sang-Hoon Lee, Dong-Keun Kwon
  • Patent number: 7675298
    Abstract: Characteristics of a fluid are determined, in one embodiment, by flowing the fluid (which may contain charged particles) between a plurality of electrode pairs, applying respective DC voltages across at least two of the electrode pairs, and measuring resulting currents through the fluid at the respective electrode pairs. In one example, respective plates of the electrode pairs are configured so that they do not fully encircle one another.
    Type: Grant
    Filed: June 15, 2007
    Date of Patent: March 9, 2010
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventor: Peter Forgacs
  • Patent number: 7652479
    Abstract: A method and apparatus for measuring the through-thickness resistance or conductance of a thin electrolyte is provided. The method and apparatus includes positioning a first source electrode on a first side of an electrolyte to be tested, positioning a second source electrode on a second side of the electrolyte, positioning a first sense electrode on the second side of the electrolyte, and positioning a second sense electrode on the first side of the electrolyte. current is then passed between the first and second source electrodes and the voltage between the first and second sense electrodes is measured.
    Type: Grant
    Filed: August 6, 2007
    Date of Patent: January 26, 2010
    Assignee: Scribner Associates, Inc.
    Inventors: Kevin R. Cooper, Louie L. Scribner
  • Publication number: 20090322341
    Abstract: A system and method of processing a test current for an analyte measurement in a fluid using a test strip and a test meter are disclosed. The method comprises sampling the test current at a pre-determined sampling rate to acquire a plurality of A/D conversions. The method also comprises filtering out at least a highest magnitude A/D conversion and a lowest magnitude A/D conversion leaving a plurality of accepted A/D conversions. Further, the method comprises calculating an average or a summation of the plurality of accepted A/D conversions and converting the average or the summation into a glucose concentration.
    Type: Application
    Filed: June 30, 2008
    Publication date: December 31, 2009
    Inventors: Ulrich Kraft, James Christol, Manfred Ebner
  • Patent number: 7638034
    Abstract: A barrier structure for use in an electrochemical stochastic membrane sensor for single molecule detection. The sensor is based upon inorganic nanopores having electrically tunable dimensions. The inorganic nanopores are formed from inorganic materials and an electrically conductive polymer. Methods of making the barrier structure and sensing single molecules using the barrier structure are also described.
    Type: Grant
    Filed: September 21, 2006
    Date of Patent: December 29, 2009
    Assignee: Los Alamos National Security, LLC
    Inventors: Jose-Maria Sansinena, Antonio Redondo, Virginia Olazabal, Mark A. Hoffbauer, Elshan A. Akhadov
  • Publication number: 20090302857
    Abstract: The object of the present invention is to provide a hydrogen gas sensor that may suffer less influences from the environmental space as well as exercise less influence to the environmental space. The hydrogen gas sensor 10 comprises a first electrode 12 and a second electrode 14 are provided, and an electrolyte 16 disposed between the first electrode 12 and the second electrode 14. The first electrode and the second electrode are made of corresponding different materials in chemical potential for hydrogen gas. That is, the first electrode includes a relatively high chemical potential material, and the second electrode includes a relatively low chemical potential material. The hydrogen gas sensor detects hydrogen gas based on the electromotive force generated between these electrodes and, at least a contacting portion of the electrolyte with the first electrode and a contacting portion of the electrolyte with the second electrode are covered with a hydrogen selective permeable envelope 20.
    Type: Application
    Filed: April 11, 2006
    Publication date: December 10, 2009
    Inventors: Shuuji Harada, Kunio Matsuda
  • Patent number: 7626401
    Abstract: A method and a corresponding system for error checking an electrochemical sensor having at least two electrodes and a liquid measuring medium applied thereto are disclosed. The method discloses determining a first admittance between a first set of electrodes of the sensor; determining a second admittance between a second set of electrodes of the sensor; determining a value using the first admittance and the second admittance; and displaying an error message if the value is out of a predetermined tolerance.
    Type: Grant
    Filed: August 7, 2008
    Date of Patent: December 1, 2009
    Assignee: Roche Diagnostics Operations, Inc.
    Inventors: Joerg Dreibholz, Sylvia Saecker, Volker Unkrig
  • Patent number: 7598745
    Abstract: An apparatus (2) for measuring electrical conductivity in a material has a pair of electrically conducting elements (6), a first electrical conductor (9) coupled to the electrically conducting elements and coupling a first transformer core (10) and a second transformer core (12) to form a first current loop (8), and a second electrical conductor (17) of known resistance coupling the second transformer core (12) and a third transformer core (14) to form a second current loop (16).
    Type: Grant
    Filed: January 14, 2005
    Date of Patent: October 6, 2009
    Assignee: The University of Southern Queensland
    Inventors: Nigel Harold Hancock, Andrew Douglas Maxwell, Antonio Louis Ah Fock
  • Patent number: 7541817
    Abstract: A method of diagnosing corrosion risk of a buried pipe due to DC stray currents and/or AC voltages induced in soil employs a metal probe including a first, exposed part having a first specific resistivity, and a second, sealed reference part having a second specific resistivity. The probe is buried in the soil, and the AC current and voltage between the pipe and the probe are measured, from which the spread resistance is determined. The resistances of the first and second probe parts are determined by respectively passing first and second excitation currents through the first and second probe parts and measuring the voltages across them. The resistance measurements are stored, and the steps are repeated periodically. The corrosion of the first probe part is determined from the measurements according to an algorithm, and the pipe corrosion risk is diagnosed from an empirical combination of the corrosion of the first probe part, the spread resistance, and the AC voltage measured.
    Type: Grant
    Filed: March 1, 2005
    Date of Patent: June 2, 2009
    Assignee: Metricorr APS
    Inventors: Lars V. Nielsen, Folke Galsgaard
  • Publication number: 20090066339
    Abstract: Assay modules, preferably assay cartridges, are described as are reader apparatuses which may be used to control aspects of module operation. The modules preferably comprise a detection chamber with integrated electrodes that may be used for carrying out electrode induced luminescence measurements. Methods are described for immobilizing assay reagents in a controlled fashion on these electrodes and other surfaces. Assay modules and cartridges are also described that have a detection chamber, preferably having integrated electrodes, and other fluidic components which may include sample chambers, waste chambers, conduits, vents, bubble traps, reagent chambers, dry reagent pill zones and the like. In certain preferred embodiments, these modules are adapted to receive and analyze a sample collected on an applicator stick.
    Type: Application
    Filed: October 2, 2008
    Publication date: March 12, 2009
    Applicant: MESO SCALE TECHNOLOGIES, LLC
    Inventors: Eli N. Glezer, Jonathan K. Leland, Mark A. Billadeau, Joseph M. Leginus, Bandele Jeffrey-Coker, Jeff D. Debad, Koustubh A. Phalnikar, Sriram Jambunathan
  • Publication number: 20090039893
    Abstract: A method for measuring the through-thickness resistance or conductance of a thin electrolyte is provided. The method includes positioning a first source electrode on a first side of an electrolyte to be tested, and positioning a second source electrode on a second side of the electrolyte, wherein the second side is opposite the first side and wherein the first and second source electrodes partially overlap. The method further includes positioning a first sense electrode, corresponding to the first source electrode, on the second side of the electrolyte, wherein the first sense electrode is positioned such that it is in contact with the second side of the electrolyte directly opposite a non-overlapping portion of the first source electrode and is not in direct physical or electrical contact with the second source electrode.
    Type: Application
    Filed: August 6, 2007
    Publication date: February 12, 2009
    Applicant: Scribner Associates, Inc.
    Inventors: Kevin R. Cooper, Louie L. Scribner
  • Patent number: 7459920
    Abstract: Methods and apparatuses for obtaining electrical characteristics and moisture content of dried objects having different shapes and sizes through impedance and electrostatic capacity measurements are provided. Measuring the moisture content of dried objects comprises the steps of: introducing dried objects of different sizes and shapes into a container, inserting four electrode terminals into the container, measuring electrical characteristics between two electrodes based on the dried objects and inputting measurement results into a high impedance voltmeter. An apparatus is provided comprising: a container for accommodating dried objects having different sizes and shapes, four electrode terminals inserted into the container, an AC signal having a predetermined voltage to be applied to the terminals, and a high impedance voltmeter for measuring and receiving electrical characteristics between two terminals based on the dried objects.
    Type: Grant
    Filed: August 23, 2004
    Date of Patent: December 2, 2008
    Assignee: Incorporated Adminstrative Agency National Agriculture and Food Research Organization
    Inventors: Yuzo Mizukami, Yuichi Yamaguchi, Yusuke Sawai
  • Patent number: 7429865
    Abstract: A method and a corresponding system for error checking an electrochemical sensor having at least two electrodes and a liquid measuring medium applied thereto are disclosed. The method involves determining a first admittance between a first set of electrodes of the sensor; determining a second admittance between a second set of electrodes of the sensor; determining a value using the first admittance and the second admittance; and displaying an error message if the value is out of a predetermined tolerance.
    Type: Grant
    Filed: October 4, 2006
    Date of Patent: September 30, 2008
    Assignee: Roche Diagnostics Operations, Inc.
    Inventors: Joerg Dreibholz, Sylvia Saecker, Volker Unkrig
  • Patent number: 7408359
    Abstract: The current measuring device includes an upper solution chamber (3) and a lower solution chamber (8) whose bottom has a support layer (5) and measures a current flowing via an artificial lipid bilayer membrane (2) formed on a small hole (4) of the upper solution chamber (3), wherein the lower solution chamber (8) is provided below the upper solution chamber (3) by being surrounded with a bottom plate (6) and an interval keeping member (7a). An internal pressure of the lower solution chamber (8) is dropped so that the artificial lipid bilayer membrane (2) formed on the small hole (4) swells to the side of the lower solution chamber (8) so as to be thinner, and the thinner artificial lipid bilayer membrane (2) is supported by the support layer.
    Type: Grant
    Filed: September 17, 2004
    Date of Patent: August 5, 2008
    Assignee: Japan Science and Technology Agency
    Inventor: Toru Ide
  • Patent number: 7403017
    Abstract: There is disclosed a method of measuring formation of a barrier to restrict or reduce movement of an electroactive species. The method comprises providing an electrochemical cell having a working electrode and a counter electrode spaced from the working electrode, providing a subject component, a testing component and at least one electroactive species within the cell, the subject and testing components being intended to cause the formation of a barrier to restrict or reduce movement of an electroactive species, applying a potential between the working electrode and the counter electrode sufficient to produce a current proportional to the concentration of the electroactive species being measured, and measuring the current at the working electrode to obtain a measure of the formation of the barrier to restrict or reduce movement of the electroactive species.
    Type: Grant
    Filed: January 16, 2004
    Date of Patent: July 22, 2008
    Assignee: Universal Biosensors PTY Limited
    Inventors: Alastair McIndoe Hodges, Ronald Christopher Chatelier, Garry Chambers