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| Number | Title | Issue Date |
| 8187437 | Electrochemical gas sensor A mediator-based electrochemical gas sensor reacts selectively with hydrogen sulfide. The gas sensor has an electrolyte solution (9), which contains a mediator compound in the form of metallates of transition metals. ... | 05/29/2012 |
| 8163149 | Gas-monitoring assembly comprising one or more gas sensors and one or more getters, and method of using same 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 spe... | 04/24/2012 |
| 8110081 | Oxygen sensor improvement method A method for improving the performance of a galvanic fuel cell type oxygen sensor comprises providing a pressure equalization port leading to the interior of an inner core housing that contains the membrane, the electrolyte and the anode and cathode electrodes and h... | 02/07/2012 |
| 8052855 | Carbon nanotube gas sensor and method of manufacturing the same A carbon nanotube (“CNT”) gas sensor includes a substrate, an insulating layer formed on the substrate, electrodes formed on the insulating layer, and CNT barriers that protrude higher than the electrodes in spaces between the electrodes to form gas detecting sp... | 11/08/2011 |
| 8012326 | Conducting polymer nanofiber sensors Polymer nanofibers, such as polyaniline nanofibers, with uniform diameters less than 500 nm can be made in bulk quantities through a facile aqueous and organic interfacial polymerization method at ambient conditions. The nanofibers have lengths varying from 500 nm t... | 09/06/2011 |
| 7967965 | Gas sensor The present invention provides a unique solution to the problems of both steady-state and transient signals produced by a variety of interfering stimuli, including humidity, which relies upon the inclusion in a gas sensing electrode in an electrochemical gas sensor ... | 06/28/2011 |
| 7883611 | Electrochemical sensor having a mediator compound An electrochemical sensor, especially for gases, is provided having a mediator compound based on transition metal salts of polybasic acids and/or transition metal salts of polyhydroxycarboxylic acids. The electrochemical sensor also contains a DLC, BDD or a precious... | 02/08/2011 |
| 7790005 | Electrode and method for making electrode Disclosed is a gas permeable electrode comprising an electrocatalyst which is permeable to a reactant or reaction product, the electrocatalyst comprising particulate boron-doped diamond. There is also disclosed a method of making an electrocatalyst which is permeabl... | 09/07/2010 |
| 7678253 | Atmospheric corrosion sensor An electrochemical sensor for corrosive gases that contains at least two electrodes is described. The presence of a target corrosive gas results in the formation of metal ions that can be reduced at an electrode producing an electrical current that depends on the in... | 03/16/2010 |
| 7560013 | Tree fruit postharvest chemical sensor An electrochemical sensor for organic molecules such as ethylene includes an electrochemical cell, gas sample inlet means and means for detecting current produced by the oxidation of the organic molecule at the anode of the cell. The sensor is capable of sensing mul... | 07/14/2009 |
| 7537678 | Detecting electrode and nitrogen oxide sensor using the same The present invention uses a sensor electrode (3) in a nitrogen oxide sensor (10) which includes a nitrate or nitrite of an alkali metal and an oxide of a rare-earth element. The nitrate/nitrite of the alkali metal replaces part of the lattice of the o... | 05/26/2009 |
| 7534333 | Electrochemical gas sensor An electrochemical gas sensor which comprises an electrode assembly, including a catalytic sensing electrode and a counter electrode, mounted inside a housing provided with at least one gas entrance, a reservoir for containing electrolyte in use, a compressible wick... | 05/19/2009 |
| 7435321 | Proton conductor gas sensor A MEA 6 having a proton conductive membrane is sandwiched by metal plates 14, 15 and they are further sandwiched by heat pressable films 20, 21. An opening 24 and an opening 18 are formed in the heat pressable film 20 and th... | 10/14/2008 |
| 7404882 | Film-type solid polymer ionomer sensor and sensor cell A miniaturized gas sensor including film type electrodes, and a solid ionomer electrolyte, for the detection of toxic gases, i.e., carbon monoxide, and other oxidizable or reducible gases and vapors is described. The all-solid planar sensor cell has two or more film... | 07/29/2008 |
| 7393505 | Proton conductor gas sensor A proton conductor gas sensor whose durability at high temperature is enhanced by using gel not converted to sol even at high temperature in a water reservoir. Fine particles of silica are gelled by adding water thereto and agitating the mixture under shear force. T... | 07/01/2008 |
| 7393442 | Ex-situ PEM fuel cell testing: towards visualizing gas diffusion The invention comprises novel apparatuses and testing methods for evaluating a fluid diffusion component. The apparatus includes a fluid capable of undergoing oxidation or reduction, a half-cell electrode assembly able to receive the fluid, and a change in acidity i... | 07/01/2008 |
| 7381314 | Liquid electrochemical gas sensor An aqueous solution of a Na salt of a phenol sulfonic acid polymer as a liquid electrolyte is held in a separator of a liquid electrochemical gas sensor. A sensing electrode and a counter electrode are connected to the separator to detect CO at a range from about ... | 06/03/2008 |
| 7367217 | Sensor device for detection of dissolved hydrocarbon gases in oil filled high-voltage electrical equipment A multi-gas sensor device for the detection of dissolved hydrocarbon gases in oil-filled electrical equipment. The device comprising a semiconductor substrate, one or more catalytic metal gate-electrodes deposited on the surface of the semiconductor substrate operab... | 05/06/2008 |
| 7341650 | Method of manufacturing sensor and sensor In a method of manufacturing a sensor, firstly, a plate-type detection element is inserted through an element-insertion through-hole of a first powder-compacted ring. Secondly, a flange section including at least the first powder-compacted ring is integrally assembl... | 03/11/2008 |
| 7322507 | Transducer assembly, capillary and wire bonding method using the same A transducer assembly and wire bonding method has a vibration unit for generating an ultrasonic wave. A body section is coupled to the vibration unit for transferring the ultrasonic wave. A tapered horn is coupled to the body section for transferring and concentrati... | 01/29/2008 |
| 7316767 | Gas sensing element Provided is a multilayer gas sensing element having a high measurement accuracy and less susceptible to a leakage current. The element comprises an oxygen pump cell for adjusting an oxygen concentration in a measured gas chamber, a sensor cell for detecting a specif... | 01/08/2008 |
| 7316768 | Gas sensor and method of manufacture A gas sensor comprises an electrically conductive housing including a shelf member and a chamber containing an electrolyte. A conductive cathode mounted on the shelf member has a plurality of holes therein and a conductive tail element. A gas permeable membrane over... | 01/08/2008 |
| 7297242 | Self-adjusting electrochemical sensor A gas detector with a compensated electrochemical sensor exhibits altered sensitivity in response to decreasing stochastic noise in an output thereof. A gain parameter can be adjusted to alter sensitivity. A life-time estimate can be made based on sensitivity. ... | 11/20/2007 |
| 7288175 | Noiseless gas concentration measurement apparatus A noiseless circuit structure of a gas concentration measuring apparatus is provided. The gas concentration measuring apparatus includes a control circuit and a gas sensor including a solid electrolyte body, a cell, and a heater serving to heat the solid electrolyte... | 10/30/2007 |
| 7282168 | Gas sensor assembly and method A gas sensor assembly comprises a housing (65) including a bore (61). A pin (50) extends through the bore (61) and an O-ring (100) is located in the bore. The O-ring (100) contacts the pin (50) and parts of the bore (... | 10/16/2007 |
| 7279133 | Planar sensor and a method for measuring the temperature of same In a planar oxygen sensor having a pump cell, a reference cell, a sensor chamber and a heating device, a ground plane electrode is provided and includes a sensing portion having a first sense lead and a second sense lead and a measuring portion having a first measur... | 10/09/2007 |
| 7279080 | Gas sensors This invention provides an assembly comprising a sensing electrode and a counter electrode in contact with a membrane body formed from a solid polymer electrolyte system comprising a fluorinated polymer matrix and a charge carrying component which is dispersed in th... | 10/09/2007 |
| 7279081 | Electrochemical sensor Electrolytic solution which contains sulfuric acid and is stored in an electrolytic solution storage 2 of a case 3 is caused to be retained in an electrolytic solution retainer 25. A reference electrode 18 and a counter electrode 19 | 10/09/2007 |
| 7276745 | Gas sensor The present invention provides a gas sensor having excellent humidity resistance even if used in a high temperature and high humidity atmosphere. According to the present invention, a gas sensor is comprised of: a silicon substrate; a metal-oxide semiconductor porti... | 10/02/2007 |
| 7264778 | Carbon monoxide sensor and method of use thereof Carbon monoxide sensors suitable for use in hydrogen feed streams and methods of use thereof are disclosed. The sensors are palladium metal/insulator/semiconductor (Pd-MIS) sensors which may possess a gate metal layer having uniform, Type 1, or non-uniform, Type 2, ... | 09/04/2007 |
| 7258773 | Solid polymer electrolyte oxygen sensor An oxygen sensor includes a solid polymer electrolyte, e.g., on an acid treated Nafion membrane and uses a diffusion-limited fuel cell type reactions. The sensor avoids electrolyte leakage and avoids consumption of electrodes. In different configurations, a counter ... | 08/21/2007 |
| 7254986 | Sensor device for detection of dissolved hydrocarbon gases in oil filled high-voltage electrical equipment A multi-gas sensor device for the detection of dissolved hydrocarbon gases in oil-filled electrical equipment. The device comprising a semiconductor substrate, one or more catalytic metal gate-electrodes deposited on the surface of the semiconductor substrate operab... | 08/14/2007 |
| 7236083 | Resistance type oxygen sensor and oxygen sensor device using it and air/fuel ratio control system The present invention provides a resistance-type oxygen sensor, and an oxygen sensor device and an air/fuel ratio control system using same. The present invention relates to a resistance-type oxygen sensor with suppressed temperature dependence, wherein: (1) a gas d... | 06/26/2007 |
| 7217354 | Method and apparatus for detection of chemical vapors The present invention is a gas detector and method for using the gas detector for detecting and identifying volatile organic and/or volatile inorganic substances present in unknown vapors in an environment. The gas detector comprises a sensing means and a detecting ... | 05/15/2007 |
| 7201831 | Impurity detection device There is provided a sample preparation device and method for preparing a sample of liquid for detection of impurities. First (40) and second (38) electrodes are provided, located for immersion in a liquid under test. A semipermeable membrane (42... | 04/10/2007 |
| 7189315 | Ion sensor and clinical analyzer using the same An ion sensor has a flow path through which a sample flows. An ion-exchange membrane is in contact with the sample in the sample flow path. An internal solution is provided on one side of the ion-exchange membrane. An internal electrode is provided so as to come in ... | 03/13/2007 |
| 7182845 | Electrochemical sensing circuit having high dynamic range An electronic sensing circuit for an electrochemical gas sensor cell providing high dynamic range is described. The electronic circuit utilizes an amplifier with a resistive feedback element to provide high sensitivity linear sensing of low detected gas concentratio... | 02/27/2007 |
| 7182846 | Hydrogen-containing gas measurement sensor element and measuring method using same A gas sensor element is provided which is designed to measure the concentration of hydrogen-containing gas accurately. The sensor element includes an oxygen pump cell working to keep the concentration of oxygen contained in measurement gasses entering a measurement ... | 02/27/2007 |
| 7180076 | Photoionization detectors, ionization chambers for use in photoionization detectors, and methods of use of photoionization detectors A photoionization detector includes a housing, electrical contacts within the housing and an easily removable and replaceable photoionization chamber within the housing. The photoionization chamber includes a cathodic electrode and an anodic electrode which may be c... | 02/20/2007 |
| 7179355 | Electrochemical cell Disclosed is an electrochemical sensor for measuring carbon monoxide in a gas sample, the sensor comprising a working electrode including a working electrode catalyst, and a diffusion restriction means for restricting the diffusion of the gas sample to the working e... | 02/20/2007 |
