With Conductiometric Detector Patents (Class 422/90)
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Patent number: 11965866Abstract: A sensor node includes a sensor node printed circuit board, a sensor module, and a communication module. The sensor node printed circuit board manages power of the sensor node circuitry, the sensor module and the communication module such that power is provided from a primary power supply supplemented by a secondary power supply. The sensor module includes a plurality of air quality sensors to measure the concentration of air pollutants. The sensor module may be replaceable. The communication module may communicate air quality measurements to and receive configurations from a data management platform, which may perform processes to improve the accuracy of the air quality measurements.Type: GrantFiled: June 17, 2021Date of Patent: April 23, 2024Assignee: Clarity Movement Co.Inventors: Paolo Micalizzi, Baljot Singh, Deepak Talwar, Dengjun Lu
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Patent number: 11852580Abstract: A sensor for photoacoustic spectroscopy including a support and a mechanical resonator fastened to the support, including at least one sensor element designed to be vibrated by an acoustic wave, and at least one first capacitive electrode mechanically coupled to the sensor element so as to be moved by the sensor element when it is vibrated; and at least one second capacitive electrode forming with the at least one first electrode, a capacitive sensor; the support facing the sensor element, an apertured part formed by one or more through-openings. Also provided is a detection and/or measurement device and method, for photoacoustic spectroscopy, using such a sensor.Type: GrantFiled: November 20, 2019Date of Patent: December 26, 2023Assignees: UNIVERSITE DE MONTPELLIER, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUEInventors: Aurore Vicet, Kaim Chamassi, Michaƫl Bahriz
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Patent number: 11852625Abstract: Described herein are systems and methods of collecting, processing, and analyzing breath exhaled from a subject. Specifically, described herein are systems and methods for minimizing the amount of breath needed for analysis. Further disclosed herein are systems and methods to analyze compounds contained in a subject's breath that are indicative of certain ailments and/or present in a low concentration in the subject's breath. The systems can include a reaction chamber, a breath inlet, a reactant inlet, a fluid atomizer, and a receiving substrate for analyzing the process subject's breath. The methods can include reacting a subject's breath with a reactant to analyze the contents of the subject's breath.Type: GrantFiled: April 15, 2020Date of Patent: December 26, 2023Assignee: Verily Life Sciences LLCInventors: Benjamin Krasnow, Eric Peeters
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Patent number: 11549901Abstract: A sensor component and a mobile communication device including a sensor component are disclosed. In an embodiment a sensor component includes a subcomponent configured to sense a gas level including a resistive heater and a gas sensitive element disposed on the resistive heater; a package enclosing a cavity and accommodating the subcomponent, the package including a first opening in a position facing the gas sensitive element of the subcomponent and a second opening configured to allow a flow of gas to enter the package through the first opening and exit the package through the second opening; and an evaluation circuit configured to generate an output signal indicative of a speed of the flow of gas in response to electrical power to be supplied to the resistive heater.Type: GrantFiled: December 4, 2018Date of Patent: January 10, 2023Assignee: TDK CORPORATIONInventors: Andreas Barbul, Matthias Koenig
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Patent number: 11460422Abstract: The invention provides a method for on-site monitoring of the quality of the gases delivered to a consumer site, the monitoring being carried out during the delivery, in order to declare the delivery compliant or non-compliant with specifications, being characterized in that, during the delivery, a monitoring of the gas(es) delivered is carried out by the thermal conductivity technique.Type: GrantFiled: January 30, 2019Date of Patent: October 4, 2022Assignees: L'Air Liquide, Societe Anonyme Pour L'Etude Et L'Exploitation Des Procedes Georges Claude, CARBAGASInventor: Heinz Peyer
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Patent number: 11378562Abstract: A self-timing, passive, chemical dosimeter. The dosimeter includes a sampling media and electronics supported by a cassette. The sampling media is configured to absorb volatile organic compounds, semivolatile organic compounds, or both, while the electronics are configured to record a time of exposure. The dosimeter further includes an actuator having a closed position and an open position. In the closed position, the actuator resists exposure of the sampling media to volatile organic compounds, semivolatile organic compounds, or both, and in the open position, the actuator permits exposure of the sampling media to volatile organic compounds, semivolatile organic compounds, or both. The actuator is configured to operate the electronics for recording time of exposure.Type: GrantFiled: May 27, 2020Date of Patent: July 5, 2022Assignee: United States of America as represented by the Secretary of the Air ForceInventors: H Mitchell Rubeinstein, Christin M Duran, Daniel O Reilly, Steven D Fisher, Anthony V Qualley
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Patent number: 10753897Abstract: The invention relates to a heated sensitive layer sensor comprising an insulating substrate bearing the sensitive layer; two complementary measurement electrodes in the form of two adjacent conductive tracks configured in electrical contact with the sensitive layer; and a heating element in the form of a resistive track arranged on the substrate for uniformly heating an active area of the sensitive layer. The resistive track comprises at least three power supply points regularly spaced over the length of the resistive track, and each point of even rank is supplied at a first supply voltage and each point of odd rank is supplied at a second supply voltage.Type: GrantFiled: September 29, 2014Date of Patent: August 25, 2020Assignees: UNIVERSITE D'AIX-MARSEILLE, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUEInventors: Khalifa Aguir, Marc Bendahan, Virginie Marie Laithier Martini
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Patent number: 10376830Abstract: A gas analysis system includes a gas analyzer which analyzes a gas acquired from a living body and a liquid separator which is detachably attached to the gas analyzer, and which separates a liquid component from the gas. In the gas analysis system, the liquid separator includes a magnet, and the gas analyzer includes a magnetic sensor which detects magnetism generated by the magnet, and a determining section which, based on the magnetism detected by the magnetic sensor, determines that the liquid separator is attached to the gas analyzer.Type: GrantFiled: June 6, 2017Date of Patent: August 13, 2019Assignee: NIHON KOHDEN CORPORATIONInventors: Satoshi Yasumura, Katsumi Nakaichi, Shinya Suzuki
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Patent number: 10156535Abstract: A sensor device and a method of manufacturing the same are provided. The sensor device includes a substrate, a plurality of sensing electrodes, a humidity nanowire sensor, a temperature nanowire sensor, and a gas nanowire sensor. The sensing electrodes are formed on the substrate, and the humidity, the temperature and the gas nanowire sensors are also on the substrate. The humidity nanowire sensor includes an exposed first nanowire sensing region, the temperature nanowire sensor includes a second nanowire sensing region, and the gas nanowire sensor includes a third nanowire sensing region.Type: GrantFiled: December 8, 2015Date of Patent: December 18, 2018Assignee: Industrial Technology Research InstituteInventors: Sih-Han Li, Chih-Sheng Lin, Kuan-Wei Chen, Erh-Hao Chen, Shyh-Shyuan Sheu
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Patent number: 10073014Abstract: To provide an exhaust gas sampling mechanism which can prevent condensed water droplets in exhaust gas from being sampled by a sampling probe and advantageously sample only the gas components of the exhaust gas to be measured, thereby maintaining a high response speed in analyzing the exhaust gas, the exhaust gas sampling mechanism includes the sampling probe disposed in a flow path through which the exhaust gas flows, for sampling the exhaust gas; and a gas-permeable cover which covers at least an upstream portion or a lateral surface portion of the sampling probe in the flow path, and has a water droplet removing structure.Type: GrantFiled: May 15, 2015Date of Patent: September 11, 2018Assignee: Horiba Ltd.Inventors: Shun Fukami, Yoshihisa Onda, Kazuo Hanada
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Patent number: 10015841Abstract: A micro heater and a micro sensor is capable of providing a heater having a small thermal capacity by forming an air gap which surrounds the heater wire, and forming the heater wire on a porous substrate.Type: GrantFiled: September 24, 2015Date of Patent: July 3, 2018Assignee: Point Engineering Co., Ltd.Inventors: Bum Mo Ahn, Seung Ho Park, Sung Hyun Byun
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Patent number: 9772319Abstract: A chemical sensor (10) is described with at least one layer of a metal oxide (11) arranged between two current injecting electrodes (16,16?) with the length (L) of the layer of a metal oxide between the current injecting electrodes being less than 50 microns and one or a pair of voltage sensing electrodes (17) connected to the layer of a metal oxide (11) with the electrodes (16,16?,17) forming a 3- or 4-terminal arrangement for determining the resistance changes of layer material (11) excluding series resistances such as contact resistances close to or at at least one of the current injecting electrodes (16) from the resistance measurement.Type: GrantFiled: July 23, 2014Date of Patent: September 26, 2017Assignee: Sensirion AGInventors: Lukas Burgi, Marc Von Waldkirch, Felix Mayer
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Patent number: 9732660Abstract: An integrated sensor-catalyst is disclosed for an after-treatment (AT) system used to filter an exhaust gas flow emitted by an internal combustion engine. The integrated sensor-catalyst includes a sensor element configured to detect a parameter of the exhaust gas flow. The integrated sensor-catalyst also includes a micro-catalyst element configured to filter a pollutant from the exhaust gas flow. Additionally, the integrated sensor-catalyst includes a housing configured to hold the sensor element and the micro-catalyst element and fix the micro-catalyst element relative to the sensor element such that the micro-catalyst element is arranged and maintained in the exhaust gas flow upstream of the sensor element. A vehicle including such an AT system with the integrated sensor-catalyst is also disclosed.Type: GrantFiled: December 1, 2015Date of Patent: August 15, 2017Assignee: GM Global Technology Operations LLCInventors: Luciano Nunziato Di Perna, Jianwen Li, Charles E. Dean, Rahul Mital, David B. Brown
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Patent number: 9164071Abstract: A method and system for measuring or assessing the homeostatic relationship between gases in the body, environment or water. The measured or assessed level of gases in the body, environment or air uses the interrelationships of the various components in order to establish guidelines for treating individuals, the environment or water.Type: GrantFiled: January 2, 2014Date of Patent: October 20, 2015Inventor: William J. McFaul
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Patent number: 9041419Abstract: Examples of the present invention include apparatus and methods for monitoring aging of an item. A solid-state structure is located within, adjacent to, or otherwise proximate the item, the solid-state structure including nanostructures. The electrical resistance and/or magnetization of the solid-state structure is determined to determine the degree of aging of the item. In representative examples, the solid-state structure includes nanostructures of a metal, such as a ferromagnetic metal, within a non-magnetic matrix, such as a semimetal, semiconductor, or insulator.Type: GrantFiled: April 13, 2012Date of Patent: May 26, 2015Assignee: Indiana University of PennsylvaniaInventor: Gregory G. Kenning
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Publication number: 20150132857Abstract: A device for detecting airborne contaminants includes a protonated, electrically conductive sensing material with affinity for binding with, and capable of being deprotonated by, the airborne contaminant. Electronics measure a property of the sensing material that is sensitive to deprotonation and generates signals indicative of the airborne contaminant. A method for detecting airborne contaminants includes: determining a property change of the protonated, electrically conductive material; and determining presence of the airborne contaminant based on the change.Type: ApplicationFiled: June 13, 2013Publication date: May 14, 2015Inventors: Joseph J. Belbruno, Susanne E. Tanski
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Publication number: 20150118111Abstract: A semiconductor sensor device includes a substrate, a non-suitable seed layer located above the substrate, at least one electrode located above the non-suitable seed layer, and a porous sensing layer supported directly by the non-suitable seed layer and in electrical communication with the at least one electrode, the porous sensing layer defining a plurality of grain boundaries formed by spaced-apart nucleation on the non-suitable seed layer using atomic layer deposition.Type: ApplicationFiled: October 30, 2014Publication date: April 30, 2015Inventors: Ashwin K. Samarao, Gary O'Brien, Ando Feyh, Fabian Purkl, Gary Yama
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Publication number: 20150071821Abstract: In general, the present disclosure is directed toward a novel hybrid spintronic device for converting chemical absorption into a change in magnetoresistance. This device uses a novel magnetic material which depends on the attachment of an organic structure to a metallic film for its magnetism. Changes in the chemical environment lead to absorption on the surface of this organometallic bilayer and thus modify its magnetic properties. The change in magnetic properties, in turn, leads to a change in the resistance of a magnetoresistive structure or a spin transistor structure, allowing a standard electrical detection of the chemical change in the sensor surface.Type: ApplicationFiled: November 14, 2014Publication date: March 12, 2015Inventors: Thomas M. Crawford, Samir Y. Garzon
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Publication number: 20150037900Abstract: A device, method, and test kit for rapidly detecting cyanide in a sample. The inventive device comprises a container comprising a sample chamber and a sensor chamber separated by a selectively permeable barrier. The sample chamber contains a reagent for releasing cyanide from the sample, and the sensor chamber contains a cyanide detector comprising a conductive polymer which absorbs the released cyanide, generating a change in signal. Signals can be viewed colorimetrically or transmitted to a LCD/LED panel wherein the cyanide measurement readout is displayed.Type: ApplicationFiled: October 16, 2014Publication date: February 5, 2015Inventor: Joseph Rella
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Patent number: 8932871Abstract: A system for a vehicle includes a first ozone sensor that generates a first sensor signal indicating a first amount of ozone in air flowing into a radiator. A second ozone sensor generates a second sensor signal indicating a second amount of ozone in air flowing out of the radiator. A control module receives the first sensor signal and the second sensor signal and determines an ozone conversion rate based on the first sensor signal and the second sensor signal.Type: GrantFiled: November 8, 2011Date of Patent: January 13, 2015Inventors: Scott H. Wittkopp, Chang H. Kim, Brian T. Heil
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Patent number: 8821797Abstract: A hydrogen detection system can include an exposed detection element made of a catalytic metal which burns hydrogen so as to generate combustion heat. A hydrogen sensor can detect a hydrogen concentration based on a detected value of the detection element. A heating unit can heat the detection element. A hydrogen storage unit is included, and a hydrogen guiding pipe can guide the hydrogen from the hydrogen storage unit to the detection element. A flow rate adjusting device is attached to the hydrogen guiding pipe, and adjusts a flow rate of the hydrogen. A first dilution unit can dilute the hydrogen from the hydrogen storage unit with a dilution gas, and a controller can control the heating unit and the flow rate adjusting device.Type: GrantFiled: February 2, 2012Date of Patent: September 2, 2014Assignee: Honda Motor Co., Ltd.Inventors: Shunji Tsukabayashi, Hidetoshi Oishi, Kazuhiro Okajima
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Publication number: 20140170762Abstract: An integrated circuit arrangement (100) is disclosed comprising a substrate (210); and a gas such as a CO2 sensor comprising spatially separated electrodes including at least an excitation electrode (132) and a sensing electrode (142); a volume (120) in contact with said pair of electrodes, said volume including a chemical compound for forming a reaction product with said gas in an acid-base reaction; a signal generator (212) conductively coupled to the excitation electrode and adapted to provide the excitation electrode with a microwave signal; and a signal detector (214) conductively coupled to the sensing electrode and adapted to detect a change in said microwave signal caused by a permittivity change in said volume, said permittivity change being caused by said reaction product. A device comprising such an IC arrangement and a method of sensing the presence of a gas using such an IC arrangement are also disclosed.Type: ApplicationFiled: December 4, 2013Publication date: June 19, 2014Applicant: NXP B.V.Inventors: Dimitri Soccol, Youri Victorovitch Ponomarev, David van Steenwinckel
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Patent number: 8739604Abstract: 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: GrantFiled: December 20, 2007Date of Patent: June 3, 2014Assignee: Amphenol Thermometrics, Inc.Inventors: Kalaga Murali Krishna, Geetha Karavoor, John Patrick Lemmon, Jun Cui, Vinayak Tilak, Mohandas Nayak, Ravikumar Hanumantha
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Patent number: 8734723Abstract: A gas sensor cell using a liquid crystal composite material is provided. The gas sensor cell has recovery capability and can be reused. Upon gas adsorption, the liquid crystal composite material has visually detectable color changes and changes in electrical properties to facilitate the measurement of gas concentration from low to high.Type: GrantFiled: August 30, 2013Date of Patent: May 27, 2014Assignee: Industrial Technology Research InstituteInventors: Chin-Kai Chang, Hui-Lung Kuo
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Patent number: 8722417Abstract: An apparatus is provided for sensing an analyte in a fluid.Type: GrantFiled: January 20, 2007Date of Patent: May 13, 2014Assignee: Invoy Technologies, L.L.C.Inventor: Lubna Ahmad
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Patent number: 8721970Abstract: A portable, relatively low power gas detector incorporates a single pellistor-type sensor for sensing an explosive gas of interest. Outputs from the sensor are corrected in accordance with ambient temperature and humidity and pre-stored correction factors based on characteristics exhibited by a plurality of similar sensors.Type: GrantFiled: January 20, 2009Date of Patent: May 13, 2014Assignee: Life Safety Distribution AGInventors: Martin Willett, Martin Jones
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Publication number: 20140105790Abstract: A multi-storey gas sensor is constructed by stacking chemoresistor type gas sensing elements and providing holes through each sensing element so gas can pass from one sensing element to the next, through the sensing layers. A rich data set can be obtained by selecting appropriate combinations of materials for the different sensing layers and varying the operating conditions of the different gas-sensing elements by: taking measurements when different combinations of sensing layers are activated, when given sensing layers are heated to different temperatures or according to different heating profiles, and/or when selected sensing layers are exposed to UV light. Sensor sensitivity and selectivity can be increased by applying UV pulses of controlled duration, and target gas species can be detected based on the transient response of the sensing layer at onset of UV irradiation. Each sensing element may have a micro-hotplate architecture.Type: ApplicationFiled: June 8, 2012Publication date: April 17, 2014Inventors: Alain Gaudon, Chang Hyun Shim, Philippe Menini, Francois Loubet
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Publication number: 20140080221Abstract: An instrument to provide on-site analyses utilizing a combination cryotrap and absorbent traps in the extraction of constituents from the sample gas stream consistent with the requirements of 40 CFR Pt. 60 App. A Method 25. The air sample is passed through a cryotrap system which is maintained at the temperature of dry ice Ė72Ā° C.). Heavier molecular weight constituents in the gas sample are condensed on the cold surfaces of the trap. The lighter molecular weight constituents are retained in the absorbent trap, while also acting as a column to separate methane, carbon dioxide, and carbon monoxide from each other and the remain carbon compounds. After separation, all of the sample constituents are oxidized to carbon dioxide and reduced to methane prior to being introduced to a Flame Ionization Detector, which measures the concentration of each against known calibration standards.Type: ApplicationFiled: September 14, 2012Publication date: March 20, 2014Inventor: Wayne Allen Stollings
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Publication number: 20130336842Abstract: The invention relates to a humidity sensor including, as a humidity absorbent layer, a polymer layer including a blend including a first polyamide and a second polyamide, where the said second polyamide includes, in its repetitive units, a number of carbon atoms greater than that of the repetitive units of the first polyamide.Type: ApplicationFiled: March 2, 2012Publication date: December 19, 2013Applicant: Commissariat A L'Energie Atomique Et Aux Energies AlternativesInventor: Hubert Grange
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Publication number: 20130273665Abstract: A sensor device can include a transition metal complex capable of interacting with a carbon-carbon multiple bond moiety. The sensor can detect the fruit-ripening hormone ethylene with high sensitivity.Type: ApplicationFiled: March 15, 2013Publication date: October 17, 2013Inventors: Timothy M. Swager, Birgit Esser, Jan M. Schnorr
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Patent number: 8530241Abstract: The present technology provides an illustrative hydrofluorocarbon (HFC) elimination device. An HFC sensing device is configured to detect an ambient, gaseous HFC composition. The HFC elimination device further includes a component comprising a surface that includes glass, and a heating element that is configured to heat the glass to a temperature to decompose the ambient, gaseous HFC composition in response to detection of the ambient, gaseous HFC composition by the HFC sensing device.Type: GrantFiled: August 27, 2010Date of Patent: September 10, 2013Assignee: Empire Technology Development LLCInventor: Angele Sjong
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Patent number: 8507288Abstract: The invention relates to the use of carbon nanomaterials as a filtration material pervious to nitrogen dioxide and impervious to ozone. The invention also relates to the use of carbon nanomaterials having a specific surface, measured by the BET method, of 15 to 40 m2/g inclusive and a form factor, equal to the ratio (highest dimension/lowest dimension) of the nanomaterial, of 5 to 250 inclusive, as material for filtering a gas mixture containing nitrogen dioxide and ozone, being pervious to the nitrogen dioxide and impervious to the ozone. The invention can be used in the field of air pollution.Type: GrantFiled: May 27, 2009Date of Patent: August 13, 2013Assignees: Centre National de la Recherche Scientifique, Universite Blaise PascalāClermontāFerrand IIInventors: Alain Pauly, Marc Dubois, Katia Guerin, AndrĆ© Hamwi, JĆ©rĆ“me Brunet, Christelle Varenne, Bernard Lauron
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Patent number: 8479558Abstract: A method and apparatus for sensing analyte. The method includes the steps of sensing one or more parameters in reaction to the presence of one or more analytes and outputting a current therefrom in accordance with level of the sensed parameter by each of a plurality of sensors, each of the plurality of sensors being provided in one or more sensor array columns, receiving an output current from one of the plurality of sensors from each of the plurality of sensor arrays by a Voltage Controlled Oscillator (VCO) arranged in a VCO array. The method further includes the steps of generating an output oscillation frequency by each VCO in accordance with the level of the received output current, and counting a number of oscillations over a predetermined time received from each of the plurality of VCOs in the VCO array by a plurality of counters arranged in a counter array.Type: GrantFiled: June 15, 2010Date of Patent: July 9, 2013Assignee: Sensorbit Systems, Inc.Inventors: Klaus Dimmler, Thomas Moss, III
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Patent number: 8454902Abstract: A sensing device is configured that a first piezoelectric vibrator and a second piezoelectric vibrator, changing over a connection to an oscillation circuit, have the oscillation circuit in common, that an impedance of a conductive path including a first one-surface-side electrode constituting the first piezoelectric vibrator from the oscillation circuit and an impedance of a conductive path including a second one-surface-side electrode constituting the second piezoelectric vibrator from the oscillation circuit are uniform with each other, and that an impedance of a conductive path including a first other-surface-side electrode constituting the first piezoelectric vibrator from the oscillation circuit and an impedance of a conductive path including a second other-surface-side electrode constituting the second piezoelectric vibrator from the oscillation circuit are uniform with each other.Type: GrantFiled: February 9, 2012Date of Patent: June 4, 2013Assignee: Nihon Dempa Kogyo Co., Ltd.Inventors: Hiroyuki Kukita, Shunichi Wakamatsu, Wakako Shinobu
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Patent number: 8440467Abstract: Electronic devices comprising a dielectric material, at least one carbon sheet, and two electrode terminals are described herein. The devices exhibit non-linear current-versus-voltage response over a voltage sweep range in various embodiments. Uses of the electronic devices as two-terminal memory devices, logic units, and sensors are disclosed. Processes for making the electronic devices are disclosed. Methods for using the electronic devices in analytical methods are disclosed.Type: GrantFiled: September 29, 2008Date of Patent: May 14, 2013Assignee: William Marsh Rice UniversityInventors: James M. Tour, Yubao Li, Alexander Sinitskiy
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Patent number: 8438902Abstract: An apparatus for sensing analyte is provided. The apparatus may include a plurality of sensor array columns, each sensor array column including a plurality of sensors, each sensor being adapted for sensing one or more parameters in reaction to the presence of one or more analytes and output a current therefrom in accordance with level of the sensed parameter, a Voltage Controlled Oscillator (VCO) array including a plurality of VCOs, each VCO adapted to receive an output current from one of the plurality of sensors from each of the plurality of sensor arrays and for and generating an output oscillation frequency in accordance with the level of the received output current, and a counter array including a plurality of counters, each counter adapted to receive an output from a corresponding VCO and count a number of oscillations over a predetermined time.Type: GrantFiled: June 15, 2010Date of Patent: May 14, 2013Assignee: Sensorbit System, Inc.Inventors: Klaus Dimmler, Thomas Moss, III
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Patent number: 8435449Abstract: A chemical substance sensing element 142 for detecting a specific chemical substance included in biological information includes a carbon nanostructure and, because of metal complex or a fluorescent molecule modifying its surface, exhibits substance selectivity and high sensitivity. Of the substances modifying the surface of carbon nanostructures, CoPc reacts with NO and pentane and DAF-2 reacts with NO, as the components contained in the biological information, respectively, and both produce reaction products. The reaction product derived from CoPc changes electric resistance between nodes 154 and 156, and the reaction product derived from DAF-2 generates fluorescence of a specific wavelength when irradiated with excitation light. Therefore, by measuring the change in electric resistance or presence/absence and wavelength of fluorescent of the present element, sensing of NO or pentane is possible.Type: GrantFiled: March 4, 2008Date of Patent: May 7, 2013Assignee: Sharp Kabushiki KaishaInventors: Mikihiro Yamanaka, Katsutoshi Takao, Tomohisa Kawata, Norie Matsui, Shuhji Nishiura, Keita Hara, Yasuaki Murashi, Jun Kudo
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Patent number: 8409511Abstract: Sensing elements for sensing organic chemical analytes are disclosed. The sensing elements include a first electrode and a second electrode, and a substantially microporous, amorphous, hydrophobic, analyte-responsive organosilicate material in proximity to the first and second electrodes.Type: GrantFiled: December 22, 2009Date of Patent: April 2, 2013Assignee: 3M Innovative Properties CompanyInventors: John Christopher Thomas, Neal A. Rakow, Michael S. Wendland, Stefan H. Gryska, Michael C. Palazzotto, John E. Trend
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Patent number: 8394330Abstract: The present invention provides a class of sensors prepared from regions of conducting organic materials and conducting materials that show an increase sensitivity detection limit for amines. The present class of sensors have applications in the detection of spoiled food products and in testing for diseases, such as cholera and lung cancer, which have amines as biomarkers.Type: GrantFiled: October 1, 1999Date of Patent: March 12, 2013Assignee: The California Institute of TechnologyInventors: Nathan S. Lewis, Carol Lewis, Robert Grubbs, Gregory Allen Sotzing
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Patent number: 8383048Abstract: Methods and devices for detecting a concentration of one or more element in hydrocarbon and/or natural gas in a oil and gas field application. The device including a microstructure having a low thermal mass suspended within a channel, the microstructure includes a supporting layer and a insulating layer; a controllable thermal device in communication with the supporting layer of the microstructure, wherein the controllable thermal device is controllably heated to one or more release temperature of the one or more element; a sensing layer arranged on the insulating layer to absorb molecules of the one or more element from hydrocarbon and/or natural gas; a detecting and measuring resistance device in communication with the sensing layer for measuring the resistance changes caused by absorption of molecules of the one or more element onto the sensing layer at a first temperature and a second temperature, and storing the data on a processor.Type: GrantFiled: July 21, 2010Date of Patent: February 26, 2013Assignee: Schlumberger Technology CorporationInventors: Ronald E. G. van Hal, Hua Chen
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Patent number: 8372650Abstract: In a sensing element for a nitrogen oxide molecule of the present invention, a sensing portion that is to be bonded to a nitrogen oxide molecule to be sensed is fixed between paired metal electrodes through connecting portions. The sensing portion is a single porphyrin molecule or a single porphyrin derivative molecule each having, as a central metal thereof, iron or cobalt. The connecting portions are each a mercaptophenyleneethynyl group bonded to the single porphyrin molecule or the single porphyrin derivative molecule. Provided are a sensing element for nitrogen oxide molecule, a sensing apparatus for nitrogen oxide molecule, and a method for sensing nitrogen oxide molecule.Type: GrantFiled: March 28, 2012Date of Patent: February 12, 2013Assignee: Panasonic CorporationInventor: Kenji Toyoda
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Patent number: 8303897Abstract: An organic chemical sensor includes a dielectric core that comprises an elastomer and a high dielectric constant material. The elastomer absorbs an organic chemical to be sensed. An electrically conductive layer is secured to a first side of the dielectric core. A permeable conductive layer is secured to a second side of the dielectric core. The permeable conductive layer is electrically conductive and permeable to the organic chemical to be sensed. The absorption of the organic chemical to be sensed by the elastomeric layer causes a decrease in the capacitance between the electrically conductive layer and the permeable conductive layer.Type: GrantFiled: February 28, 2011Date of Patent: November 6, 2012Inventors: Jeannine O. Colla, Paul E. Thoma
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Patent number: 8298488Abstract: A microfabricated TID comprises a microhotplate and a thermionic source disposed on the microhotplate. The microfabricated TID can provide high sensitivity and selectivity to nitrogen- and phosphorous-containing compounds and other compounds containing electronegative function groups. The microfabricated TID can be microfabricated with semiconductor-based materials. The microfabricated TID can be combined with a microfabricated separation column and used in microanalytical system for the rapid on-site detection of pesticides, chemical warfare agents, explosives, pharmaceuticals, and other organic compounds that contain nitrogen or phosphorus.Type: GrantFiled: November 4, 2004Date of Patent: October 30, 2012Assignee: Sandia CorporationInventors: Patrick R. Lewis, Ronald P. Manginell, David R. Wheeler, Daniel E. Trudell
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Patent number: 8268242Abstract: A hydrogen sensor includes a substrate, a hydrogen absorbing member, a power source, an ammeter, and a processing unit. The hydrogen absorbing member is positioned on the substrate, and includes a carbon nanotube yarn and a hydrogen absorbing film coated on the carbon nanotube yarn. The ammeter measures an electric current. The hydrogen absorbing member and the ammeter are connected in series to the power source. The processing unit is electrically coupled to the ammeter to obtain a hydrogen concentration according to the electric current.Type: GrantFiled: December 30, 2008Date of Patent: September 18, 2012Assignee: Hon Hai Precision Industry Co., Ltd.Inventor: Tai-Hsu Chou
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Patent number: 8268630Abstract: Sensor devices and sensing methods are provided. A sensor device is provided two flow channels, each comprising a sensor, and analyte flow is alternated between the two channels such that the sensors alternately serve as a sensor and a reference, thereby increasing accuracy of the sensors. The device is useful, for example, in chemical sensing using a variety of sensor types including without limitation: chemiresistors, gravimetric sensors, optical sensors, among others. Related sensing methods also are provided.Type: GrantFiled: July 7, 2010Date of Patent: September 18, 2012Assignee: Carnegie Mellon UniversityInventors: Gary Keith Fedder, Nathan Scott Lazarus
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Patent number: 8222041Abstract: A high electron mobility transistor (HEMT) capable of performing as a CO2 or O2 sensor is disclosed, hi one implementation, a polymer solar cell can be connected to the HEMT for use in an infrared detection system. In a second implementation, a selective recognition layer can be provided on a gate region of the HEMT. For carbon dioxide sensing, the selective recognition layer can be, in one example, PEI/starch. For oxygen sensing, the selective recognition layer can be, in one example, indium zinc oxide (IZO). In one application, the HEMTs can be used for the detection of carbon dioxide and oxygen in exhaled breath or blood.Type: GrantFiled: May 8, 2009Date of Patent: July 17, 2012Assignee: University of Florida Research Foundation, Inc.Inventors: Fan Ren, Stephen John Pearton
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Patent number: 8216519Abstract: A hotplate chemical trace detector comprising a heatable conducting plate with a heater element having a predetermined temperature-power characteristic. A balancing circuit comprises an adjustable resistor for tuning the heater element to a predefined resistor value. A processor is provided for adjusting the adjustable resistor so as to provide a stabilized temperature in said heatable conducting plate and a detection circuit is provided for detecting a change of resistance in the heatable conducting plate in accordance with the presence of a chemical trace reacting in the presence of the conducting plate. According to the invention a test circuit is provided for measuring a dissipated power in the heater element and for calculating a real temperature from the dissipated power in the heater element based on the predetermined temperature-power characteristic.Type: GrantFiled: November 24, 2006Date of Patent: July 10, 2012Assignee: Consultatie Implementatie Technisch Beheer B.V.Inventor: Albert Bos
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Publication number: 20120164753Abstract: An apparatus comprises a thin-film bulk acoustic resonator such as including an acoustic mirror, a piezoelectric region acoustically coupled to the acoustic mirror, and first and second conductors electrically coupled to the piezoelectric region. In an example, an integrated circuit substrate can include an interface circuit connected to the first and second conductors of the resonator, the integrated circuit substrate configured to mechanically support the resonator. An example can include an array of such resonators co-integrated with the interface circuit and configured to detect a mass change associated with one or more of a specified protein binding, a specified antibody-antigen coupling, a specified hybridization of a DNA oligomer, or an adsorption of specified gas molecules.Type: ApplicationFiled: October 28, 2011Publication date: June 28, 2012Applicant: The Trustees of Columbia University in the City of New YorkInventors: Matthew Johnston, Kenneth Shepard, Ioannis Kymissis
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Patent number: 8198090Abstract: A cartridge is provided that can remove a residual liquid all around the leading end of a pipette, without requiring any new equipment, regardless of the viscosity of the residual liquid. This cartridge includes a plurality of tanks, each of which has an upper opening, and a liquid is introduced into or led out from at least one of the plurality of tanks 110 to 119 with a pipette. The cartridge further includes waste liquid tanks 120 to 122. The waste liquid tanks 120 to 122 each includes a capillary phenomenon generation portion. A residual liquid present at the leading end of the pipette is brought into contact with the capillary phenomenon generation portion of the waste liquid tanks, and the residual liquid is transferred to the capillary phenomenon generation portion through the capillary phenomenon to be removed from the pipette.Type: GrantFiled: October 4, 2007Date of Patent: June 12, 2012Assignee: ARKRAY, Inc.Inventors: Kosuke Kubo, Junichi Oka
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Patent number: 8178357Abstract: Sensors, sensing systems and sensing methods of the invention provide for detection of peroxides, including for example, vapor-phase H2O2 and organic peroxides such as di-tert-butyl peroxide. A sensor and sensing method of the invention uses at least two phthalocyanines, one of which exhibits an oxidation reaction with peroxides and the other of which exhibits a reduction reaction with peroxides. A peroxide is readily identified by a sensor of the invention when one of the at least two phthalocyanines exhibits increased resistance to current flow and the other of the at least two phthalocyanines exhibits decreased resistance to current flow.Type: GrantFiled: July 23, 2008Date of Patent: May 15, 2012Assignee: The Regents of the University of CaliforniaInventors: William C. Trogler, Forest Bohrer, Andrew C. Kummel