Gas Sensing Electrode Patents (Class 204/431)
  • Patent number: 10416108
    Abstract: An electrode (100) for an electrochemical gas sensor (1), wherein the electrode has a gas-permeable membrane (4). A graphene layer (3) is applied as an electrode material to the gas-permeable membrane (4). Such an electrode (1) is prepared, for example, by applying a dispersion of graphene or graphene oxide in a volatile liquid to the gas-permeable membrane and evaporating the volatile liquid.
    Type: Grant
    Filed: May 13, 2015
    Date of Patent: September 17, 2019
    Assignee: Dräger Safety AG & Co. KGaA
    Inventors: Sabrina Sommer, Frank Mett
  • Patent number: 10418184
    Abstract: The solid electrolytic capacitor according to the present invention is a solid electrolytic capacitor including a valve metal, an oxide film layer formed on a surface of the valve metal, and a solid electrolyte layer formed on the oxide film layer, wherein the solid electrolyte layer contains a conductive polymer and a gel of an organic solvent solidified with a chemical gelling agent.
    Type: Grant
    Filed: March 30, 2016
    Date of Patent: September 17, 2019
    Assignee: Tokin Corporation
    Inventors: Yasuhisa Sugawara, Yuji Murayama, Hiroyuki Demizu, Hiroki Satoh
  • Patent number: 10324060
    Abstract: Matrix materials such polymers derivatives to contain a redox active material can be used to form electrodes and probes suitable for use in pH meters and other analyte sensing devices.
    Type: Grant
    Filed: January 24, 2013
    Date of Patent: June 18, 2019
    Assignee: Parker-Hannifin Corporation
    Inventor: Eric Lee
  • Patent number: 10125376
    Abstract: Provided herein is a gaseous isoprene composition comprising isoprene, carbon dioxide and water, wherein the isoprene is in an amount between about 0.1% and about 15% by volume; wherein the carbon dioxide is in an amount between about 0.04% and about 35% by volume; wherein the water is in an amount greater than about 70% of its saturation amount. Also provided herein is a liquid isoprene composition comprising isoprene in an amount of at least 65% by weight and carbon dioxide in an amount between about 0.01% and about 1% by weight.
    Type: Grant
    Filed: December 21, 2017
    Date of Patent: November 13, 2018
    Assignee: Amyris, Inc.
    Inventor: Derek McPhee
  • Patent number: 10088157
    Abstract: A gas outlet monitoring system for a boiler system includes a gas probe(s) with a plurality of gas sensing locations wherein each location measures a plurality of parameters of the gas flow, such a oxygen concentration and temperature. The multi-sensor probe includes a tubular lance and a plurality of sensor pods spaced along the lance. Each sensor pod has an oxygen sensor disposed in a first port, and a first temperature sensor disposed in a second port. An enclosure is disposed at one end of the tubular lance. The enclosure has a respective pressure sensor for each oxygen sensor port. A plurality of first tubes passes through the lance between the enclosure and the first port of a respective sensor pod to provide a gas to the respective first port for the purpose of providing cleaning air.
    Type: Grant
    Filed: February 24, 2015
    Date of Patent: October 2, 2018
    Assignee: GENERAL ELECTRIC TECHNOLOGY GMBH
    Inventors: James P. Sutton, Rebecca Lynn Tobiasz, David J. Matteson, Allan Gunn Ferry, Robert Federick Murphy, Christopher Daniel Curl
  • Patent number: 9927421
    Abstract: The invention relates to a sample chamber for testing samples, comprising a bottom plate and a cover plate connected thereto, a sample reservoir for receiving a liquid and/or a sample to be tested, and a contact electrode which is arranged entirely in the bottom plate, in the cover plate or between the bottom plate and the cover plate and which is electrically conductively connected to a conductor element or semiconductor element disposed in and/or on the sample chamber, wherein the bottom plate and/or the cover plate are designed in such a way that an electrical contact with the contact electrode can be established from the outside in such a way that an electrically conductive connection to the conductor element or to the semiconductor element can be established from the outside through the bottom plate or through the cover plate via the contact electrode.
    Type: Grant
    Filed: September 23, 2009
    Date of Patent: March 27, 2018
    Assignee: IBIDI GMBH
    Inventors: Roman Zantl, Valentin Kahl
  • Patent number: 9694387
    Abstract: A gas sensor element in an air/fuel ratio sensor includes an element body and a protection layer having two layers (a first layer and a second layer). The gas sensor element has at least one separation portion in the form of a space between the first layer and the second layer. The gas sensor element can temporarily accumulate, in the at least one separation portion, water which adheres to the surface of the protection layer and penetrates into the protection layer. Thus, as compared with a protection layer which is identical in thickness to the protection layer, but does not have separation portions, water adhering to the protection layer is less likely to reach the element body. Therefore, there can be restrained breakage of an end of the element body which could otherwise result from thermal shock stemming from adhesion of water.
    Type: Grant
    Filed: October 28, 2014
    Date of Patent: July 4, 2017
    Assignee: NGK SPARK PLUG CO., LTD.
    Inventors: Masaki Onkawa, Shun Sakuma, Toru Iwano, Tatsuhiko Muraoka, Shigehiro Ohtsuka, Masaki Mizutani
  • Patent number: 9518952
    Abstract: A membrane electrode assembly for a gas sensor is described that includes a membrane disposed between a sensing electrode and a counter electrode. The membrane is a polymer membrane, such as an ionomer, having an ionic liquid retained therein.
    Type: Grant
    Filed: October 5, 2011
    Date of Patent: December 13, 2016
    Assignee: UTC FIRE & SECURITY CORPORATION
    Inventors: Lei Chen, Zhiwei Yang, Jean Yamanis, Georgios S. Zafiris, Joseph J. Sangiovanni
  • Patent number: 9482137
    Abstract: A system includes an internal combustion engine providing exhaust gases to an exhaust conduit, an aftertreatment system having an SCR catalyst component and disposed in the exhaust conduit. The system further includes a first NH3 sensing element preferentially sensitive to NH3 and a second NH3 sensing element preferentially sensitive to NO2 in the exhaust conduit. Both NH3 sensing elements are positioned downstream of the SCR catalyst component. The system includes a controller having a test conditions module that determines whether an NO2 concentration downstream of the SCR catalyst component is below a threshold value, an NH3 diagnostic module that provides a detection comparison value in response to the NO2 concentration, a first signal from the first NH3 sensing element, and a second signal from the second NH3 sensing element. The controller includes a sensor condition module that provides an NH3 sensor condition value in response to the detection comparison value.
    Type: Grant
    Filed: December 3, 2012
    Date of Patent: November 1, 2016
    Assignee: Cummins Inc.
    Inventors: Feng Liu, Mert Geveci
  • Patent number: 9456522
    Abstract: Embodiments include systems and methods for self-determination of equipment rack consumption by rack-mounted appliances. Some embodiments operate in context of pre-integrated systems having a number of rack-mounted appliances installed in an equipment rack. The equipment rack can include a number of passive location designators, each positioned on the equipment rack in a physical location corresponding to a mounting location for a rack-mounted appliance, and each including a code that indicates its associated mounting location. Each rack-mounted appliance can include a sensor which, when the rack-mounted appliance is installed in a mounting location of the equipment rack, can read the code on the passive location designator associated with that mounting location. This reading can be used by the rack-mounted appliance to self-determine its rack consumption.
    Type: Grant
    Filed: April 30, 2014
    Date of Patent: September 27, 2016
    Assignee: ORACLE INTERNATIONAL CORPORATION
    Inventor: Jon K. Aimone
  • Patent number: 9400257
    Abstract: A system includes a polymeric housing and a first connector in electrically conductive connection with a first component within the housing. The first connector includes a first extending member formed from a conductive loaded polymeric material. The first extending member is formed such that an interior thereof includes conductive elements within a matrix of the polymeric material so that the interior is electrically conductive and an exterior surface thereof comprises the polymeric material and is less conductive than the conductive interior. The conductive interior of the first extending member is in electrically conductive connection with the first component. The first connector further includes a first extending conductive element in electrical connection with the conductive interior of the first extending member. The first extending conductive element extends from the first extending member to pass through the polymeric housing.
    Type: Grant
    Filed: December 20, 2013
    Date of Patent: July 26, 2016
    Assignee: MSA TECHNOLOGY, LLC
    Inventors: Michael Alvin Brown, Brian Keith Davis, Towner Bennet Scheffler
  • Patent number: 9123829
    Abstract: The present disclosures relates to a method for producing ultrathin chip stacks and chip stacks. Generally, a plurality of first semiconductor chips is formed in a wafer. A second semiconductor chip is applied to each of the plurality of first semiconductor chips via a connection layer and a stabilization layer is applied to fill in the interspace between each of the second semiconductor chips. The wafer, semiconductor chip, and stabilization layer are thinned and the wafer is diced to produce a plurality of singulated chip stacks.
    Type: Grant
    Filed: August 30, 2013
    Date of Patent: September 1, 2015
    Assignee: INFINEON TECHNOLOGIES AG
    Inventors: Hans-Joachim Barth, Harald Seidl
  • Publication number: 20150144504
    Abstract: An electrochemical detection system for determining a concentration of a gas in exhaust gases of a combustion process. The system includes an electrolyte, a reference electrode, and a sense electrode that cooperate to form an electrochemical sensor that exposes both the reference electrode and the sense electrode to the exhaust gases. The electrochemical sensor is configured to output a sensor signal indicative of a species concentration of a species gas in the exhaust gases. The sensor signal exhibits a transient error in response to a change in a reference concentration of a reference gas in the exhaust gases. The processor is configured to determine the species concentration based on the sensor signal, and to determine an estimate of the transient error based on an operating condition of the combustion process.
    Type: Application
    Filed: November 27, 2013
    Publication date: May 28, 2015
    Inventors: DA YU WANG, DAVID M. RACINE, SHENG YAO
  • Publication number: 20150136095
    Abstract: A sensor for detecting the oxygen content in the intake tract of an internal combustion engine includes: a sensor element having a measurement electrode; a metal cap that surrounds the sensor element; a heat dissipation element that connects the sensor element and the metal cap; and a bracket for the sensor element. The bracket is in the form of a plastic housing configured to accommodate evaluation electronics for the sensor element.
    Type: Application
    Filed: April 23, 2013
    Publication date: May 21, 2015
    Inventors: Johannes Ante, Andreas Wildgen
  • Publication number: 20150114848
    Abstract: In a method for operating a heatable exhaust-gas sensor, which supplies at least one measuring signal and in which a sensor heater is operated using a pulse-width modulated operating voltage, the detection of the at least one measuring signal has priority over the supply of the pulse-width modulated operating voltage for sensor heater, and at least during a predefined time window in which the measuring signal is detected, the supply of the pulse-width modulated operating voltage for the sensor heater is suppressed using a blocking signal.
    Type: Application
    Filed: February 14, 2013
    Publication date: April 30, 2015
    Applicant: Robert Bosch GmbH
    Inventors: Frank Engelke, Claudius Bevot, Thomas Schulz, Rolf Reischl, Rolf Kraemer, Andreas Gess
  • Patent number: 9011659
    Abstract: A sensor apparatus includes a first electrode and a second electrode at a predefined distance from one another. The sensor apparatus includes a substrate arranged in a predefined first region of the sensor carrier such that the first electrode and the second electrode are substantially electrically decoupled from one another if the outer side of the sensor carrier is substantially free of particles. A third electrode is coupled to a solid electrolyte that is additionally coupled to the second electrode. A diffusion barrier is coupled to the third electrode in a predefined third region and the exhaust gas is applied to the third electrode only in the third region via the diffusion barrier.
    Type: Grant
    Filed: April 5, 2012
    Date of Patent: April 21, 2015
    Assignee: Continental Automotive GmbH
    Inventor: Philippe Grass
  • Publication number: 20150096905
    Abstract: An electrochemical detector can be powered partly, or entirely by voltages generated by the sensor. Using either active circuits or a passive component which produces a predetermined voltage drop in the respective sensor, two electrode consumable anode oxygen sensors can be provided which do not evolve hydrogen during operation.
    Type: Application
    Filed: October 9, 2013
    Publication date: April 9, 2015
    Applicant: Honeywell International Inc.
    Inventors: Keith Francis Edwin PRATT, Martin WILLETT, Lei XIAO, Ali HOSSEINMARDI
  • Publication number: 20150090115
    Abstract: The invention relates to an on-site medical gas production plant (100) comprising a unit (50) for purifying gas, such as air, a first compartment (A) for storing purified gas, and a main gas line (10) fluidically connecting the gas purification unit (50) to the said first storage compartment (A). It furthermore comprises a three-way actuated valve (VA) arranged on the main gas line (10) upstream of the first storage compartment (A), and furthermore connected to the atmosphere (at 12) via a vent line (11), as well as an operating device (4) which controls at least the three-way actuated valve (VA), and at least a first gas analysis device (D1) of which a first measurement line (29) is fluidically connected (at 28) to the main line (10), upstream of the three-way actuated valve (VA), and which is electrically connected to the said operating device (4).
    Type: Application
    Filed: September 18, 2014
    Publication date: April 2, 2015
    Inventor: Paul EDWARDS
  • Patent number: 8992752
    Abstract: There is provided a gas sensor element for detecting the concentration of a specific gas component in gas under measurement, which includes a plate-shaped element body and a porous protection layer. The element body has, at one end portion thereof, a gas sensing portion formed with a solid electrolyte substrate and a pair of electrodes. The porous protection layer has a porous structure formed of ceramic particles and surrounds at least the circumference of the one end portion of the element body. In the present invention, the porous protection layer has an inner region, an intermediate region and an outer region laminated together in order of mention from the element body toward the outside. The intermediate region has a porosity lower than those of the inner and outer regions. There is also provided a gas sensor with such a gas sensor element.
    Type: Grant
    Filed: February 21, 2012
    Date of Patent: March 31, 2015
    Assignee: NGK Spark Plug Co., Ltd.
    Inventors: Masaki Onkawa, Shigehiro Otsuka, Seiji Oya, Satoshi Teramoto, Kuniharu Tanaka, Takeshi Mitsuoka
  • Publication number: 20150083592
    Abstract: A gas sensor having a housing with first and second chambers featuring a porous separator located there between. The first chamber of the sensor being connected to atmosphere via a gas diffusion aperture. The gas sensor having a sensing electrode disposed within the first chamber and at least a second electrode disposed within the second chamber. The sensor having an ionic liquid electrolyte disposed within the second chamber where the sensing electrode and at least second electrodes comprise platinum.
    Type: Application
    Filed: September 26, 2013
    Publication date: March 26, 2015
    Inventors: John Chapples, Martin Geoffrey Jones
  • Publication number: 20150065339
    Abstract: Catalysts prepared from abundant, cost effective metals, such as cobalt, nickel, chromium, manganese, iron, and copper, and containing one or more neutrally charged ligands (e.g., monodentate, bidentate, and/or polydentate ligands) and methods of making and using thereof are described herein. Exemplary ligands include, but are not limited to, phosphine ligands, nitrogen-based ligands, sulfur-based ligands, and/or arsenic-based ligands. In some embodiments, the catalyst is a cobalt-based catalyst or a nickel-based catalyst. The catalysts described herein are stable and active at neutral pH and in a wide range of buffers that are both weak and strong proton acceptors. While its activity is slightly lower than state of the art cobalt-based water oxidation catalysts under some conditions, it is capable of sustaining electrolysis at high applied potentials without a significant degradation in catalytic current. This enhanced robustness gives it an advantage in industrial and large-scale water electrolysis schemes.
    Type: Application
    Filed: July 2, 2014
    Publication date: March 5, 2015
    Inventors: Aaron J. Bloomfield, Stafford W. Sheehan, Samuel L. Collom, Robert H. Crabtree, Paul T. Anastas
  • Patent number: 8961880
    Abstract: A sensor for detecting phosgene includes a pair of electrodes separated by an electrode gap, and a layer of conducting polymer material positioned over and making electrical contact with the pair of electrodes, the layer of conducting polymer material being modified with an amine such that the electrical resistance of the conducting polymer material measured across the electrodes is responsive to changes in an amount of phosgene to which the conducting polymer material is exposed.
    Type: Grant
    Filed: July 14, 2008
    Date of Patent: February 24, 2015
    Assignees: The Aerospace Corporation, The Regents of the University of California
    Inventors: Shabnam Virji, Robert Kojima, Richard B. Kaner, Bruce H. Weiller
  • Publication number: 20150021202
    Abstract: The disclosure relates to a device for electrochemical gas sensing, comprising a plurality of different electrodes and a freestanding electrolyte film covering said electrodes, wherein at least two of those electrodes present a different distance from its top surface to the electrolyte film surface. The disclosure also relates to an electronic system and a method for electrochemical gas sensing.
    Type: Application
    Filed: July 17, 2014
    Publication date: January 22, 2015
    Applicant: Stichting IMEC Nederland
    Inventors: Jozef Franciscus Maria Oudenhoven, Greja Johanna Adriana Maria Verheyden, Marcel Arie Günther Zevenbergen
  • Patent number: 8926822
    Abstract: An integrated sensing device is capable of detecting analytes using electrochemical (EC) and electrical (E) signals. The device introduces synergetic new capabilities and enhances the sensitivity and selectivity for real-time detection of an analyte in complex matrices, including the presence of high concentration of interferences in liquids and in gas phases.
    Type: Grant
    Filed: May 13, 2013
    Date of Patent: January 6, 2015
    Assignee: Arizona Board of Regents for and on behalf of Arizona State University
    Inventors: Nongjian Tao, Erica Forzani
  • Publication number: 20140353156
    Abstract: An electrochemical gas sensor having an electrode with a catalyst distributed on a porous surface is described. The porous surface can be a polytetrafluoroethylene tape. Alternate embodiments include layered or stacked electrodes.
    Type: Application
    Filed: May 12, 2014
    Publication date: December 4, 2014
    Applicant: LIFE SAFETY DISTRIBUTION AG
    Inventors: Keith Francis Edwin Pratt, John Chapples, Martin Geoffrey Jones
  • Publication number: 20140346042
    Abstract: A gas sensor that can enhance gas detection sensitivity more than the conventional sensors with a simple configuration is proposed. An electric double layer including a gate insulating layer is formed in an ionic liquid (IL), a change of a state of the gate insulating layer in the ionic liquid (IL) that occurs by absorbing a gas is directly reflected in a source-drain current (Isd) that flows in a carbon nanotube (8). Therefore, the gas detection sensitivity can be enhanced more than in the conventional sensors. Further, since the ionic liquid (IL) can be simply provided on a substrate (2) to be in contact with the carbon nanotube (8) and a gate electrode (7), the configuration that chemically modifies a surface of the carbon nanotube with a plurality of polymers as in the conventional gas sensors is not needed, and the configuration can be simplified correspondingly.
    Type: Application
    Filed: December 27, 2012
    Publication date: November 27, 2014
    Inventors: Isao Shimoyama, Kiyoshi Matsumoto, Yusuke Takei, Hidetoshi Takahashi, Noboru Kiga, Masahito Honda
  • Patent number: 8888978
    Abstract: An electrochemical oxygen sensor is provided. The electrochemical sensor includes a housing having first and second compartments, a sensing electrode disposed within the first compartment of the housing, a consumable anode disposed within the second compartment of the housing, a porous separator between the sensing electrode and consumable electrode that separates the first and second compartments and an electrolyte saturating the porous separator and consumable anode. A first aperture on a first end of the housing extends between an outside surface of the housing and first compartment that allows gas access to the sensing electrode. A venting system on a second, opposing end of the housing includes a second aperture extending between the outside surface of the housing and second compartment and has a predetermined permeability that controls pressure in the second compartment and loss of moisture from the sensor.
    Type: Grant
    Filed: February 28, 2012
    Date of Patent: November 18, 2014
    Assignee: Life Safety Distribution AG
    Inventors: Graeme Ramsay Mitchell, Martin Williamson, Stuart Harris
  • Patent number: 8888987
    Abstract: Techniques are generally described for a gas sensor testing device. In some examples, the gas sensor testing device comprises a chamber including a wall having an inside surface and an outside surface, the inside surface defining a gas channel, the wall including at least one water molecule. In some examples, the gas sensor testing device includes a first electrode wire coupled to the outside surface of the wall. In some examples, the gas sensor testing device includes a second electrode wire coupled to the inside surface of the wall. In some examples, the wires are operable to generate a current through the wall when a voltage is applied across the wires. In some examples, the current is effective to electrolyze the at least one water molecule to generate a gas.
    Type: Grant
    Filed: November 9, 2010
    Date of Patent: November 18, 2014
    Assignee: Empire Technology Development LLC
    Inventor: Nathan C Schattke
  • Publication number: 20140291170
    Abstract: Provided herein are methods, apparatuses, and systems for enhancing the detection of reactive gases, such as ethylene gas, that are present at low concentrations in air samples. The methods and systems enhance the selectivity, sensitivity, and accuracy of electrochemical cells by removing interfering gases from the air samples. Some systems include an ethylene sensor that includes an electrochemical cell and a polar solvent gas trap pre-filter, wherein the gas trap is positioned upstream of the electrochemical cell. Some methods are methods of measuring an ethylene level in an air sample, and include passing the air sample by through a polar solvent gas trap, and measuring the ethylene level in the air sample with an electrochemical cell.
    Type: Application
    Filed: February 20, 2014
    Publication date: October 2, 2014
    Applicant: CID Bio-Science, Inc.
    Inventors: James R. Goecks, Ryan M. Lerud
  • Publication number: 20140291151
    Abstract: The invention relates to a method of producing solid oxide fuel cells (SOFC) having a cathode-electrolyte-anode unit supported by a metal substrate. It is the object of the invention in this respect to provide solid oxide fuel cells which achieve an increased strength, improved temperature change resistance, a secure bonding of films forming the cathode-electrolyte-anode unit and can be produced free of distortion and reproducibly. In the method in accordance with the invention, a film forming the anode is first wet chemically applied to a surface of a porous metallic substrate as a carrier of the cathode-electrolyte-anode unit. An element which has already been sintered gas tight in advance and which forms the electrolyte is then placed on or applied a really to this film forming the anode and at a first thermal treatment up to a maximum temperature of 1250° C.
    Type: Application
    Filed: September 23, 2011
    Publication date: October 2, 2014
    Applicants: Technische Universitat Dresden, Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
    Inventors: Mihails Kusnezoff, Nikolai Trofimenko, Egle Dietzen, Chriffe Belda
  • Publication number: 20140284222
    Abstract: Described herein is a gas meter system (5) for detecting toxic gas combinations including a housing (10) having an opening (20), a measuring cell (15) enclosed by the housing and comprising a plurality of gas sensors (17) in fluid communication with the environment via the opening in the housing, and an evaluating circuit (32). The gas sensors detects a concentration of a first gas and a concentration of a second gas so the evaluating circuit can identify a hazard due to an additive or synergistic toxic effect upon combined exposure to the first gas and the second gas. Related apparatus, systems, methods and/or articles are described.
    Type: Application
    Filed: November 1, 2011
    Publication date: September 25, 2014
    Applicant: Draeger Safety, Inc.
    Inventors: Richard William Wanek, JR., Greg Martin Sesny
  • Patent number: 8840766
    Abstract: The present invention relates to a gas-monitoring assembly (100) and method for selectively determining the presence of a target gas in a gaseous environment that potentially comprises one or more interfering gases. Such gas-monitoring assembly and method specifically employ one or more gas sensors (S1) one or more getters (G1) arranged and constructed to reduce cross-interference caused by potential presence of the interfering gases in such gaseous environment to be monitored. The gas-monitoring assembly and method of the present invention are capable of monitoring a gaseous environment with respect to potential presence of multiple target gases that may interfere with one another.
    Type: Grant
    Filed: April 24, 2012
    Date of Patent: September 23, 2014
    Assignee: Honeywell International, Inc.
    Inventors: Stefan Stromereder, Peter Koller
  • Patent number: 8840775
    Abstract: A gas sensor includes a housing having disposed therein a membrane electrode assembly comprising a sensing electrode, a counter electrode, and a polymer membrane disposed between the sensing electrode and the counter electrode. The polymer membrane comprises an ionic liquid retained therein. The sensor also includes a catalyst support that can be stable in a range of potentials to allow for detection mode and catalyst regeneration mode to be operative. The sensor further includes a circuitry and algorithm to implement the catalyst regeneration mechanism electrochemically. The sensor further includes a chamber for reference gas to which the counter electrode is exposed, and a chamber for test gas to which a gas to be tested is exposed. The sensor also includes a pathway for test gas to enter the chamber and a measured electrical circuit connecting the sensing electrode and the counter electrode.
    Type: Grant
    Filed: December 16, 2011
    Date of Patent: September 23, 2014
    Assignee: UTC Fire & Security Corporation
    Inventors: Lei Chen, Zhiwei Yang, Antonio M. Vincitore, Joseph J. Sangiovanni
  • Patent number: 8840765
    Abstract: The present invention concerns an electrochemical sensor for determining oxygen dissolved in an aqueous measuring medium, a process for its production as well as a method for determining oxygen dissolved in an aqueous measuring medium using the electrochemical sensor.
    Type: Grant
    Filed: November 10, 2011
    Date of Patent: September 23, 2014
    Assignee: Roche Diagnostics Operations, Inc.
    Inventor: Helmut Offenbacher
  • Publication number: 20140262827
    Abstract: A microelectrochemical sensor includes an energy supply unit and a sensor unit. The energy supply unit is configured to generate electrical energy using a reference fluid. The sensor unit is configured to determine a concentration difference of a chemical species between a measuring fluid and the reference fluid. The measuring fluid has an unknown concentration of the species, and the reference fluid has a known concentration of the species. The sensor unit is electrically connected to the energy supply unit and is designed to determine the concentration difference using the electrical energy from the energy supply unit.
    Type: Application
    Filed: March 5, 2014
    Publication date: September 18, 2014
    Applicant: Robert Bosch GmbH
    Inventors: Richard Fix, Denis Kunz, Andreas Krauss, Kathy Sahner, Philipp Nolte
  • Publication number: 20140262780
    Abstract: A gas sensor is disclosed. The gas sensor includes a gas sensing layer, at least one electrode, an adhesion layer, and a response modification layer adjacent to said gas sensing layer and said layer of adhesion. A system having an exhaust system and a gas sensor is also disclosed. A method of fabricating the gas sensor is also disclosed.
    Type: Application
    Filed: June 2, 2014
    Publication date: September 18, 2014
    Applicant: Amphenol Thermometries, Inc.
    Inventors: Kalaga M. KRISHNA, Geetha KARAVOOR, John P. LEMMON, Jun CUI, Vinayak TILAK, Mohandas NAYAK, Ravikumar HANUMANTHA
  • Publication number: 20140262837
    Abstract: The present invention provides for a device for detecting one or more target gas compounds, such as a volatile organic compound, such as formaldehyde, comprising a chamber comprising a gas inlet and a gas outlet, wherein the chamber is capable of absorbing one or more non-target gas compounds. When the device is in use, the gas outlet is in fluid communication with a detector capable of detecting the amount or concentration of the one or more target gas compounds.
    Type: Application
    Filed: May 30, 2014
    Publication date: September 18, 2014
    Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: Meera A. Sidheswaran, Lara A. Gundel
  • Publication number: 20140262835
    Abstract: Various embodiments of a gas sensor device and method of fabricating a gas sensor device are provided. In one embodiment a gas sensor device includes a base substrate, an electrolyte layer disposed on the base substrate and a plurality of potentiometric sensor units electrically coupled to the base substrate. Each potentiometric sensor unit includes an electrolyte layer disposed on the base substrate, a sensing electrode comprising tungsten oxide (WO3) and platinum (Pt), a reference electrode comprising Pt, and a plurality of connectors coupled to the plurality of potentiometric sensors to connect the plurality of potentiometric sensors in series.
    Type: Application
    Filed: March 14, 2014
    Publication date: September 18, 2014
    Applicant: THE CLEVELAND CLINIC FOUNDATION
    Inventors: Gary W. Hunter, Carl W. Chang, Prabir K. Dutta, Suvra P. Mondal, Azlin M. Biaggi-Labiosa
  • Publication number: 20140251835
    Abstract: Systems and methods for implementing an automated process which calculates the current specific gravity of a liquid by using the original gravity of a fermenting liquid and a measurement of the percent alcohol by volume.
    Type: Application
    Filed: March 7, 2014
    Publication date: September 11, 2014
    Applicant: Alcotek, Inc.
    Inventors: John Mitchell, Karl R. Wolf, JR., Patrick Clifford
  • Patent number: 8815077
    Abstract: An electrochemical sensor for measuring the oxygen partial pressure in a process fluid, comprises an electrolyte-filled sensor body, which is covered on one side charged with the process fluid by an oxygen-permeable membrane, a cathode on the membrane, an annular guard electrode surrounding the cathode, which in measuring operation lies at the same potential as the cathode, an anode charged by the electrolyte in the sensor body, a reference electrode charged by the electrolyte in the sensor body, wherein between the anode and cathode a voltage can be applied, which is controlled between the cathode (8) and reference electrode at a constant polarization voltage and the measuring sensor current flowing in measuring operation between the cathode and anode is a measure for the oxygen partial pressure in the process fluid, and a test voltage source which can be switched in a testing mode between the cathode and guard electrode for producing test oxygen in the electrolyte and/or in the process fluid between the
    Type: Grant
    Filed: June 23, 2010
    Date of Patent: August 26, 2014
    Assignee: Knick Elektronische Messgeräte GmbH & Co. KG
    Inventors: Heinz Wohlrab, René Oberlin
  • Patent number: 8815065
    Abstract: A sensor body of an electrochemical gas sensor having no water reservoir is housed in a metal can including a sensing electrode on one surface of a proton-conducting membrane or a separator retaining an electrolyte and a counter electrode on the opposite surface thereof. The counter electrode is supported by and electrically connected to the metal can via a connecting member. The sensing electrode is connected to a diffusion control plate with the sensing electrode-side ring member, and the ring member is conductive and includes a hole at a center thereof that is connected to a hole of the diffusion control plate.
    Type: Grant
    Filed: February 11, 2013
    Date of Patent: August 26, 2014
    Assignee: Figaro Engineering Inc.
    Inventors: Yoshihiro Yamamoto, Masafumi Okada, Kuniyuki Izawa, Tomoyasu Honda
  • Patent number: 8816867
    Abstract: A detector includes a smoke detecting section that includes a light-receiving unit at a position at which the light-receiving unit does not directly receive light emitted by a light-emitting unit in a chamber in which a labyrinth for preventing light from directly entering from the outside and an insect net covering the rim of the labyrinth are provided, the light-receiving unit receiving light scattered by smoke flowing into the chamber. An opening hole is formed open in the surface of the cover receiving hot air current, of the detector. In the cover behind the opening hole, an electrochemical gas sensor is placed to bring gas generated by a fire through the opening hole into contact with an electrolyte solution to detect the gas by an electrode.
    Type: Grant
    Filed: July 13, 2012
    Date of Patent: August 26, 2014
    Assignee: HOCHIKI Corporation
    Inventors: Atsuchi Mammoto, Hiromichi Ebata
  • Publication number: 20140231253
    Abstract: A lead-free, self-corrosion-free electrochemical galvanic oxygen sensor is provided. The preferred sensor includes a container, the container including a lead-free anode, an alkali electrolyte, a carbon platinized with platinum cathode and a nickel wire current collector, wherein the container further includes a diffusion barrier that causes the sensor to operate in the limiting current region.
    Type: Application
    Filed: September 14, 2011
    Publication date: August 21, 2014
    Applicant: LIFE SAFETY DISTRIBUTION AG
    Inventor: Cornel Cobianu
  • Patent number: 8795492
    Abstract: A gas sensor element includes a solid electrolyte body having oxygen ion conductivity, a pair of measurement and reference electrodes respectively provided on an opposite pair of first and second surfaces of the solid electrolyte body, a porous diffusion-resistant layer through which a measurement gas is introduced to the measurement electrode, and a protective layer. The protective layer is provided to cover, at least, an outer surface of the porous diffusion-resistant layer through which the measurement gas flows into the diffusion-resistant layer. The protective layer is hydrophilic at room temperature and water-repellent at high temperatures at which the solid electrolyte body can be activated.
    Type: Grant
    Filed: October 28, 2010
    Date of Patent: August 5, 2014
    Assignee: Denso Corporation
    Inventors: Makoto Ito, Fuminori Nakashima
  • Patent number: 8795484
    Abstract: A printed gas sensor is disclosed. The sensor may include a porous substrate, an electrode layer, a liquid or gel electrolyte layer, and an encapsulation layer. The electrode layer comprises two or more electrodes that are formed on one side of the porous substrate. The liquid or gel electrolyte layer is in electrolytic contact with the two or more electrodes. The encapsulation layer encapsulates the electrode layer and electrolyte layer thereby forming an integrated structure with the porous substrate.
    Type: Grant
    Filed: January 14, 2013
    Date of Patent: August 5, 2014
    Assignee: KWJ Engineering, Inc.
    Inventors: Joseph R. Stetter, Edward F. Stetter, Daniel D. Ebeling, Melvin Findlay, Vinay Patel
  • Publication number: 20140197043
    Abstract: An exemplary apparatus for measuring nitric oxide in a fluid includes a sample injection port; a pump and reservoir; a valve; a measurement chamber; an electromagnetic radiation source; controls and user interface; and a cartridge. The cartridge includes a sample chamber a mix chamber; a sample degassing chamber; and a planar reaction chamber. The cartridge preferably is single-use and disposable. Furthermore, additional inventive aspects and features are disclosed related to measuring nitric oxide in a fluid.
    Type: Application
    Filed: March 15, 2013
    Publication date: July 17, 2014
    Inventors: Scott Everett BLOMBERG, Mark Louis Peterson, Amanda Marie Franey
  • Publication number: 20140197044
    Abstract: Apparatus and methods in accordance with one or more preferred embodiments of the present invention are used to measure nitric oxide in a fluid, and each includes a sample injection port; a pump; a measurement chamber; an electromagnetic radiation source; one or controls and user interfaces; and a cartridge. The cartridge includes a sample chamber; an electromagnetic radiation and heat chamber; and a gas permeable membrane. The cartridge preferably is single-use and disposable. Further apparatus and methods in accordance with other alternative embodiments, and additional inventive aspects and features, are disclosed related to measuring nitric oxide in a fluid.
    Type: Application
    Filed: January 14, 2014
    Publication date: July 17, 2014
    Inventors: Scott Everett BLOMBERG, Mark Louis Peterson, Amanda Marie Franey
  • Publication number: 20140190829
    Abstract: A gas sensor includes a metal shell, a gas sensor element held in the metal shell, a metal portion arranged between a flange portion of the gas sensor element and a seat portion of the metal shell and a porous thermal spray layer formed on the gas sensor element. When viewed in cross section along the direction of an axis of the gas sensor, a corner of the metal portion axially overlaps in position with or radially outwardly protrudes from an outer surface of a part of the thermal spray layer located on a side surface of the flange portion and is brought into contact with the seat portion. A rear end-facing surface of the metal portion is brought into contact with an outer surface of the thermal spray layer at a position radially inside the side surface of the flange portion.
    Type: Application
    Filed: October 26, 2012
    Publication date: July 10, 2014
    Inventors: Daiki Tabuchi, Hidekazu Kato, Yasuhiro Fujita, Mitsuru Sugihara, Takayoshi Atsumi
  • Patent number: 8771489
    Abstract: A gas sensor in one form comprises a housing including a base and a top defining an interior space. The housing includes a gas entry hole and first and second electrical terminals. First and second electrodes in the housing interior space each comprise a membrane having a layer of platinum black catalyst on one side. The second electrode includes a lower amount of platinum black catalyst than the first electrode. A separator is placed between the first and second electrodes. Current collectors electrically connect the first and second electrodes to the respective first and second electrical terminals whereby sensor current represents concentration of gas while minimizing cross sensitivity.
    Type: Grant
    Filed: January 3, 2012
    Date of Patent: July 8, 2014
    Assignee: Honeywell International Inc.
    Inventors: Lei Xiao, Terence Nicholas Moran
  • Patent number: 8771490
    Abstract: An electrochemical sensor having at least two electrodes, and a reservoir chamber containing electrolyte. The reservoir chamber is internally coated with a wicking material to spread the electrolyte evenly over the walls of the reservoir.
    Type: Grant
    Filed: July 26, 2010
    Date of Patent: July 8, 2014
    Assignee: Industrial Scientific Corporation
    Inventors: Mark William Bordo, Wenfeng Peng