| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 204431000 | Gas sensing electrode | 57 |
| 20080230385 | NOx SENSING SYSTEM HAVING NOx SENSOR AND METHOD FOR DETERMINING A NOx CONCENTRATION UTILIZING THE NOx SENSOR - A NOx sensing system having a NOx sensor and a method for determining a NOx concentration utilizing the NOx sensor are provided. The NOx sensor utilizes a second chamber communicating with ambient atmosphere with ambient oxygen for allowing an electrochemical cell to accurately measure an oxygen concentration in a first chamber communicating with an exhaust stream to more accurately control the oxygen concentration in the first chamber, without disassociating NOx therein. The more accurate control of the oxygen concentration in the first chamber, subsequently allows for a more accurate measurement of the NOx in the exhaust system. | 09-25-2008 |
| 20080277283 | Gas Sensor - A gas sensor is used in particular for determining a physical property of a measuring gas, preferably for determining the concentration of a component of an exhaust gas in an exhaust branch of an internal combustion engine. The gas sensor has a sensor element situated in a housing. The housing includes a protecting tube having apertures through which the measuring gas may reach the sensor element. At least on its side facing the sensor element, the protecting tube has an absorptivity which is subject to only minor changes during the intended operation of the gas sensor in an exhaust branch of an internal combustion engine. | 11-13-2008 |
| 20080314747 | ANALYZER - An analyzer includes a reforming unit which reforms fuel containing an organic compound which contains carbon and hydrogen into a reformed gas containing hydrogen, a flame ionization detector which is connected to the reforming unit, and detects an ion generated by combusting the reformed gas supplied from the reforming unit and a sample gas, or ionizing a sample gas by reaction with the reformed gas supplied from the reforming unit, and outputs an output signal representing the ionic amount, and an analysis controller which analyzes the output signal from the flame ionization detector, and provides data capable of identifying a component contained in the sample gas. | 12-25-2008 |
| 20080314748 | GAS SENSOR - A gas sensor has a sensor element of a cup shape and an insulation electrical heater for heating the sensor element. The insulation electrical heater is placed in an inside of a hollow part of the sensor element. An insulation length extension area is formed on an outer peripheral surface of the insulation electrical heater between electrodes of the insulation electrical heater and a reference electrode metal member tightly bonded onto the sensor element. The insulation length extension area is composed of a plurality of flanges, a rectangle flange part formed in one body, a taper shaped flange part, or a bended flange part. | 12-25-2008 |
| 20090008252 | Ozone generating device - Devices for generating and storing ozone. A device for generating ozone includes: at least one elongated electrode unit including an outer tubular dielectric member and an inner conducting member having a longitudinal axis; and one or more elongated electrode tubes disposed circumferentially about the longitudinal axis. Each of the electrode tubes is arranged in parallel to the electrode unit. When an electrical potential is applied across the conducting member and electrode tubes during operation, plasma is established between the dielectric member and electrode tubes. The plasma converts oxygen gas into ozone gas. | 01-08-2009 |
| 20090090626 | Hydrogen sensitive composite material, hydrogen gas sensor, and sensor for detecting hydrogen and other gases with improved baseline resistance - A hydrogen sensitive composite sensing material based on cerium oxide with or without additives to enhance sensitivity to hydrogen, reduce cross-sensitivities to interfering gases, or lower the operating temperature of the sensor, and a device incorporating these hydrogen sensitive composite materials including a support, electrodes applied to the support, and a coating of hydrogen sensitive composite material applied over the electroded surface. The sensor may have in integral heater. The sensor may have a tubular geometry with the heater being inserted within the tube. A gas sensor device may include a support, electrodes applied to the support, and a dual sensor element to cancel unwanted effects on baseline resistance such as those resulting from atmospheric temperature changes. The hydrogen sensitive composite material or other gas sensitive materials may be used in the dual element gas sensor device. | 04-09-2009 |
| 20090120794 | 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 of a catalyst material, in addition to a first catalyst material reactive to the target gas, the additional, or second, catalyst material producing a response to an interfering stimulus which is of the opposite polarity to that generated by the first catalyst material. | 05-14-2009 |
| 20090159447 | GAS SENSOR AND METHOD OF MAKING - A gas sensor is disclosed. The gas sensor includes a gas sensing layer including at least one chemical compound with the general chemical formula M | 06-25-2009 |
| 20090205958 | Sensor for determining gases and method for manufacturing the sensor - A sensor for determining the concentration of a gas in gas mixtures, which has a measuring and a reference electrode as well as a polymer layer, which is in contact with the gas mixture and with the measuring electrode. A pH sensitive electrode is provided as the measuring electrode. | 08-20-2009 |
| 20090242403 | SENSOR ELEMENT AND GAS SENSOR - A gas sensor element, wherein an amount of flexure in a first section extending in a longitudinal direction of the sensor element from the position 8/27 of a size of the element apart from one end of the element to the other end, is set to be greater than or equal to 1/1360 and less than or equal to 1/670 with respect to the size in the longitudinal direction of the element. The amount of flexure is a sum of a distance from a regression line to an upper side maximum displacement point and a distance from the regression line to a lower side maximum displacement point when calculating the regression line representing the relation of the position X in the longitudinal direction of the element and the displacement Y in a thickness direction from a plurality of data sets showing the relation of position X and displacement Y. | 10-01-2009 |
| 20090242404 | GAS SENSOR - A gas sensor for detecting a predetermined gas component in a measurement gas includes a sensor element in which an opening of a first gas inlet and an opening of a second gas inlet for introducing the measurement gas from an outside are provided at one end. The openings are elongated and substantially rectangular. A sum of sizes in a lateral direction of the openings is greater than or equal to 8 μm and less than or equal to 60 μm, and a sum of areas of the openings is greater than or equal to 0.02 mm | 10-01-2009 |
| 20090255812 | LAMINATED GAS SENSOR ELEMENT AND GAS SENSOR - A laminated gas sensor element extending in a longitudinal direction and having a detection part including a plate-shaped element body which has a heater layer having an embedded resistance heating body and a detection layer laminated to the heater layer and having a vertical surface along a lamination direction and a horizontal surface perpendicular to the lamination direction; and a porous protective layer coating the vertical surface and the horizontal surface of the element body constituting the detection part, wherein a thickness of the protective layer formed on the vertical surface is thicker than a thickness of the protective layer formed on the horizontal surface. | 10-15-2009 |
| 20090294285 | Co-fired gas sensor - A sensor for detecting a gas is provided. The gas sensor may have a sensing section, a heating section, and a resistance temperature detector. The resistance temperature detector may be co-fired to be integral with at least one of the sensing section and the heating section. | 12-03-2009 |
| 20090301879 | PROTECTIVE COATINGS FOR SOLID-STATE GAS SENSORS EMPLOYING CATALYTIC METALS - A protective coating sustains the long term performance of a solid-state hydrogen sensor that includes a catalyst layer for promoting the electrochemical dissociation of hydrogen. The catalyst is susceptible to deterioration in the presence of at least one contaminant, including carbon monoxide, hydrogen sulfide, chlorine, water and oxygen. The coating comprises at least one layer of silicon dioxide having a thickness that permits hydrogen to diffuse to the catalyst layer and that inhibits contaminant(s) from diffusing to the catalyst layer. The preferred coating further comprises at least one layer of a hydrophobic composition, preferably polytetrafluoroethylene, for inhibiting diffusion of water through the protective coating to the catalyst layer. The preferred protective coating further comprising at least one layer of alumina for inhibiting diffusion of oxygen through the protective coating to said catalyst layer. In manufacturing the protectively-coated sensor, the silicon dioxide layer is preferably annealed. | 12-10-2009 |
| 20100012494 | 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. | 01-21-2010 |
| 20100032292 | AMMONIA GAS SENSOR - A single-cell sensor element is configured for ammonia gas sensing. The sensor includes an electrolyte layer, an NH | 02-11-2010 |
| 20100147684 | ULTRA-SENSITIVE GAS SENSOR USING OXIDE SEMICONDUCTOR NANOFIBER AND METHOD OF FABRICATING THE SAME - An ultra-sensitive gas sensor using semiconductor oxide nanofibers and a method of fabricating the same are provided. The gas sensor includes an insulating substrate, a metal electrode formed on the insulating substrate, and a semiconductor metal oxide nanofibers layer formed on the metal electrode and having nanoparticles of high sensitivity coated thereon. The method of fabricating a semiconductor oxide nanofibers gas sensor includes fabricating an oxide using a solution for electrospinning, electrospinning the solution, performing an annealing process to form an oxide semiconductor nanofiber, and partially coating a nano-sized metal oxide or metal catalyst particle having high sensitivity to a specific gas on a surface of the nanofiber having a large specific surface area. As a result, a semiconductor oxide nanofibers gas sensor having ultra sensitivity, high selectivity, fast response and long-term stability can be fabricated. | 06-17-2010 |
| 20100147685 | GAS SENSOR - Between a gas sensing layer ( | 06-17-2010 |
| 20100175995 | HEATER COIL FOR GAS SENSOR, DETECTING ELEMENT FOR GAS SENSOR, CATALYTIC COMBUSTION GAS SENSOR, AND MANUFACTURING METHOD OF CATALYTIC COMBUSTION GAS SENSOR - A lead portion ( | 07-15-2010 |
| 20100243447 | PUMPING ELECTRODE OF GAS SENSOR, METHOD OF MANUFACTURING CONDUCTIVE PASTE, AND GAS SENSOR - A gas sensor including a pump electrode and a method for manufacturing a conductive paste for forming the pump electrode. When the pump electrode constituting an electrochemical pump cell for adjusting an oxygen partial pressure inside a gas sensor to measure a concentration of a gas component in a measurement gas by a current-limiting method is formed of a cermet of a noble metal and an oxide having oxygen ion conductivity, the noble metal contains a first noble metal having a catalytic activity, and a second noble metal having a catalytic activity suppressing ability to suppress the catalytic activity of the first noble metal with respect to an oxide gas except for oxygen, and an abundance ratio of the second noble metal with respect to the first noble metal in a particle surface of the first noble metal existing in the pump electrode is to be 0.01 to 0.3. | 09-30-2010 |
| 20100252432 | ELECTROCHEMICAL OXYGEN SENSOR - The invention provides an electrochemical oxygen sensor including a cathode, an anode, and an electrolyte solution, wherein the electrolyte solution contains a chelating agent. Since the electrolyte solution in the electrochemical oxygen sensor of the invention contains the chelating agent, the speed of response can be increased. In the invention, the provision of an anode of tin is preferred from the viewpoints of low cost, a low environmental load, and a low susceptibility to liquid leakage. In the invention, the concentration of the chelating agent in the electrolyte solution is preferably not less than 0.005 mol/liter because response speed characteristics are less likely to lower. | 10-07-2010 |
| 20100264027 | GAS SENSOR - A gas sensor including a gas sensor element configured by laminating three or more ceramic layers and having an electrode pad disposed on an outer surface thereof and penetrating holes extending in a laminating direction through two or more of the ceramic layers disposed between an inner conductor and the electrode pad. The gas sensor element has a conductive path formed therein which passes through the penetrating holes formed in different respective ones of the ceramic layers and electrically connects the inner conductor and the electrode pad. Further, the conductive pad is a type 1 conductive path which passes through a plurality of the penetrating holes disposed so as not to overlie one another as viewed from the laminating direction. | 10-21-2010 |
| 20100288637 | Gas Sensor and Manufacturing Method Thereof - A gas sensor and manufacturing method thereof. The gas sensor includes a substrate, a pair of electrodes disposed on the substrate, and a gas sensing thin film covering the electrodes, the gas sensing thin film is made up of carbon nanotubes and tin oxide. | 11-18-2010 |
| 20100326825 | SOLID ION CONDUCTOR, ELECTROCHEMICAL DEVICE USING A SOLID ION CONDUCTOR, AND PROCESS FOR PRODUCING THE SAME - Provided is a solid ion conductor which can be used suitably for an electrochemical device or a hydrogen gas sensor. An electrochemical device wherein a pair of electrodes are formed in the state that a solid ion conductor is sandwiched therebetween, the conductor being obtained by subjecting, to curing treatment with ultraviolet rays, a mixture of a photocurable resin and an ionic liquid having one or more cationic moieties selected from imidazolium based ions, pyridinium based ions, aliphatic amine based ions, alicyclic amine based ions and aliphatic phosphonium ions, and having one or more anionic moieties selected from boric acid ions, triflate ions, halogen based ions, and phosphonate ions. | 12-30-2010 |
| 20110005929 | 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. | 01-13-2011 |
| 20110017597 | METHOD FOR FABRICATING HYDROGEN ELECTROCHEMICAL SENSOR USING TETRAMETHYLAMMONIUM HYDROXIDE PENTAHYDRATE - The present invention relates to a method for fabricating an electrochemical sensor which can highly sensibly detect a hydrogen gas by adapting Me | 01-27-2011 |
| 20110068005 | DEVICE FOR DETERMINING SULFUR CONTENT IN FUEL - With a method for the determination of the sulfur content in fuels, a fuel sample is introduced into a miniaturized and/or microstructured combustion chamber ( | 03-24-2011 |
| 20110120866 | ENVIRONMENTAL GAS SENSOR AND METHOD OF MANUFACTURING THE SAME - Provided are an environmental gas sensor and a method of manufacturing the same. The environmental gas sensor includes an insulating substrate, metal electrodes formed on the insulating substrate, and a sensing layer in which different kinds of nanofibers are arranged perpendicular to each other on the metal electrodes. Thus, the environmental gas sensor can simultaneously sense two kinds of gases. | 05-26-2011 |
| 20110174617 | GAS SENSOR - A gas sensor including a gas sensor element that extends in an axial direction and has a detection section at a front-end side thereof, and an electrode pad at a rear-end side thereof; a connection terminal that is electrically connected to the electrode pad; and an insulated separator that extends along the axial direction and has an inserting hole into which the connection terminal is inserted. An element side section is arranged within the inserting hole and is connected the electrode pad, and an external circuit side section extends further to the outside in a diametrical direction than an outer surface of the separator through one or more first bending sections from the element side section. | 07-21-2011 |
| 20120018305 | GAS SENSOR - A gas sensor ( | 01-26-2012 |
| 20120055790 | Gas Sensor Assembly with Interior Heat Dissipation, Sealing, and Support Plug - A gas sensor assembly including a substrate located in a housing. The substrate includes a high temperature gas sensor end and a lower temperature electronics end. A heat transfer, sealing, and support plug is mounted in the housing to the substrate. The plug seals the sensor end from the electronics end and transfers the heat generated at the high temperature sensor end successively through the substrate, the thermally conductive plug, the housing, and into the outside air. In one embodiment, the housing includes a collar which surrounds a portion of the substrate and is coupled to and supported on one end of the plug and a jacket which surrounds the electronics end of the substrate and includes a neck coupled to and supported on an opposite end of the plug. | 03-08-2012 |
| 20120228139 | Vented Oxygen Cell - 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. | 09-13-2012 |
| 20120228140 | Low Water Vapour Transfer Coating of Thermoplastic Moulded Oxygen Gas Sensors - A gas sensor is disclosed. The gas sensor includes a gas sensing electrode and a counter electrode disposed within a housing, and respective conductors that connects the gas sensing electrode and the counter electrode to a sensing circuit. The housing includes walls defining a cavity containing electrolyte in fluid communication with the gas sensing electrode and counter electrode and wherein the walls further comprise one or more coatings or second layers superimposed on the walls. The one or more coatings or second layers have a lower water vapor transport rate than that of the walls, such that, in use, water vapor transport between the electrolyte and atmosphere through the walls of the housing is reduced. | 09-13-2012 |
| 20130092538 | LOW-TEMPERATURE ACTIVITY EXHAUST SENSOR - An exhaust sensor comprises a sensing electrode and a reference electrode each in contact with an electrolyte. At least one of the sensing electrode and the reference electrode are formed by depositing an electrode precursor material on an electrolyte precursor material and sintering the combination at a sufficient temperature for a sufficient time to achieve densification of the electrolyte, wherein the electrode precursor material comprises an alkali salt. Electrode patterns having enhanced perimeter ratios are also disclosed. The resulting exhaust sensor is capable of providing a usable output at a reduced operating temperature. | 04-18-2013 |
| 20130153418 | SENSING DEVICE AND FABRICATING METHOD THEREOF - A sensing device is provided. A suction port of a chamber is sealed by using a gas sealing layer with a gas sealing filter. The gas sealing filter has a plurality of one-way passes. The one-way passes have a width in a range of several nanometers to several hundred nanometers. A gas molecular exhausts to the outside of the chamber through the one-way passes. Owing to preventing the material of gas sealing layer from flowing into the chamber by the gas sealing filter, superior sealing performance is achieved as compared to those adopting solder or sealing material, thereby facilitating control of the condition in the chamber. | 06-20-2013 |
| 20130319858 | Electrochemical Gas Detector with Carbon Element - An electrochemical detector includes a carbon based element located between a separator and a current collector of an adjacent electrode. Elements can take the form of a carbon fabric located between the separator and the collector, or a linear, or, circular carbon deposit on a surface of the separator adjacent to the respective current collector. Other conductive coatings including gold, platinum or transition metals, as well as carbon, can be deposited directly onto a porous substrate, such as a masked separator material. | 12-05-2013 |
| 20140027281 | Fuel Cell for Use in an Alcohol Breath Tester - An improved alcohol fuel cell sensor and alcohol breath tester assembly where wires for connection to the electrodes are bent to have a generally planar base portion which may be positioned toward the center of the electrodes and an upright that then extends to the outside of the case. The uprights are generally perpendicular to the base allowing the wires to exit the housing toward the center, as opposed to toward an edge. | 01-30-2014 |
| 20140102898 | SENSORS AND SENSOR HOUSING SYSTEMS - 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. A sealing bond is formed between the polymeric material of the first extending member and the polymeric housing. | 04-17-2014 |
| 20140190829 | GAS SENSOR - 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. | 07-10-2014 |
| 20140231253 | LEAD-FREE ELECTROCHEMICAL GALVANIC OXYGEN SENSOR - 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. | 08-21-2014 |
| 20140262780 | GAS SENSOR AND METHOD OF MAKING - 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. | 09-18-2014 |
| 20140291151 | METHOD FOR PRODUCING SOLID OXIDE FUEL CELLS HAVING A CATHODE-ELECTROLYTE-ANODE UNIT BORNE BY A METAL SUBSTRATE, AND USE OF SAID SOLID OXIDE FUEL CELLS - 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. the organic components contained in the film forming the anode are expelled, this film is sintered and in so doing a connection with material continuity is established between the substrate and the electrolyte. Subsequent to this, a further film forming the cathode is wet chemically applied to the electrolyte and is sintered in a further thermal treatment at temperatures beneath 1000° C. and the cathode is connected with material continuity to the electrolyte. | 10-02-2014 |
| 20140346042 | GAS SENSOR - 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 (I | 11-27-2014 |
| 20150083592 | GAS SENSOR USING AN IONIC LIQUID ELECTROLYTE - 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. | 03-26-2015 |
| 20150338365 | SENSOR - A sensor includes a holder; and an electrode and an electrolyte solution that are placed in the holder, wherein the electrode contains a Pb—Sb alloy. | 11-26-2015 |
| 20160011143 | Electrochemical Gas Sensors with Ionic Liquid Electrolyte Systems | 01-14-2016 |
| 20180024085 | 2H TO 1T PHASE BASED TRANSITION METAL DICHALCOGENIDE SENSOR FOR OPTICAL AND ELECTRONIC DETECTION OF STRONG ELECTRON DONOR CHEMICAL VAPORS | 01-25-2018 |
| 20180024091 | COMBUSTIBLE GAS SENSING ELEMENT WITH CANTILEVER SUPPORT | 01-25-2018 |
| 20220132822 | DEVICE FOR DETECTING INSECT LARVAE AND ADULT INSECTS IN STORED PRODUCTS BY SENSING THEIR VOLATILE PHEROMONES AND SEMIOCHEMICALS - Minimal-cost, high-accuracy, and portable devices used to detect the presence of insects at all stages of life, including in the egg stage, in stored products by sensing gas phase markers such as volatile pheromones, semiochemicals, and kairomones. The methods, devices, and systems disclosed herein utilize a sensor array configured to simultaneously measure a plurality of target markers and filter background gases while remaining compact, highly accurate, and easy to operate. | 05-05-2022 |
| 204432000 | With gas diffusion electrode | 8 |
| 20090057150 | ELECTROCHEMICAL GAS SENSOR - An electrochemical gas sensor is disclosed which comprises a gas sensing electrode and a counter electrode disposed within a housing, the housing having an aperture for gas ingress, the gas sensing electrode and counter electrode being separated by a region containing electrolyte, and means for connecting the gas sensing electrode and the counter electrode to a sensing circuit. An electrolyte-absorbing element is disposed inboard of the aperture, between the housing and the gas sensing electrode, in order to absorb electrolyte passing through the gas sensing electrode whilst maintaining a gas path through the electrolyte-absorbing element. | 03-05-2009 |
| 20090272648 | Syperhydrophobic Nanostructured Materials as Gas Diffusion Electrodes for Gas Detectors - An electrochemical gas detector includes a superhydrophobic, nanostructured gas porous electrode. The electrode exhibits a physically disrupted porous region. In an embodiment, electrode material can be deposited around a templating material which is removed before use. Such electrodes exhibit repeatable and reproducible characteristics. | 11-05-2009 |
| 20100006434 | Polyaniline Nanofiber-Amine Composite Materials for Phosgene Detection - 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. | 01-14-2010 |
| 20100025241 | HYDROGEN GAS SENSOR - Disclosed herein is a hydrogen gas sensor which requires no purging, has excellent hydrogen gas selectivity, and can be produced at relatively low cost. The hydrogen gas sensor includes a detection unit having a base body composed of a solid polymer electrolyte or a carbon-containing solid polymer electrolyte obtained by dispersing a carbon material in a solid polymer electrolyte and a catalyst layer provided on one of the surfaces of the base body to perform catalytic function on contact with hydrogen gas. | 02-04-2010 |
| 20100193356 | SENSOR ELEMENT AND METHOD AND MEANS FOR ITS PRODUCTION - A sensor element for gas sensors is described for determining gas components of a gas mixture, especially in exhaust gases of internal combustion engines, having at least one electrochemical measuring cell and at least one porous layer that is exposed to the gas mixture. The porous layer contains palladium, platinum, ruthenium, an alkali metal and/or an alkaline earth metal, the platinum being contained in the porous layer at a minimum concentration of 1.5 wt. %. Furthermore, a method and an impregnating solution are described for producing the sensor element. | 08-05-2010 |
| 20100224491 | Solid-State Electrolyte Gas-Sensor Element - A gas-sensor element having a layer-type arrangement or configuration, in particular for determining gas components and/or concentrations of gas components of a measuring gas, having a sensor cell, including a first electrode, which is to be exposed to the measuring gas, a second electrode, which is to be exposed to a reference gas, and a solid-state electrolyte situated between the two electrodes, including a reference-air channel situated between the electrode that is exposed to the reference gas and the solid-state electrolyte, and including a heating element. In the superposition of two gas-sensor element layers, a path formed by an electrode facing the heating element is developed at a lateral offset with respect to a path formed by the heating element. | 09-09-2010 |
| 20140131201 | PROCESS FOR MAKING AMMONIA GAS INDICATOR USING SINGLE WALL CARBON NANOTUBE/ALUMINA COMPOSITE THICK FILM - The invention relates to a process of making ammonia gas indicator, using single wall carbon nanotubes (SWCNTs)/alumina (Al2O3) composite thick film, comprising the steps of (a) preparing a nanoporous SWCNTs/Al2O3 composite thick film of thickness in the range of 60 to 65μm prepared by sol-gel process; (b) curing the film at a temperature in the range of 450° C. to 500° C. for a time period in the range 0.5 to 2 hour to obtain a cured sample; (c) providing thick film planar electrodes of Ag—Pd paste on same side of the cured sample by screen printing; and (d) heat treating the resultant cured sample with electrodes at a temperature in the range of 800° C. to 850° C. for a time period in the range of 0.5 to 2 hours to obtain a gas indicator. | 05-15-2014 |
| 20160041116 | COMPOSITE METAL OXIDE MATERIALS INCLUDING POLYCRYSTALLINE NANOFIBERS, MICROPARTICLES, AND NANOPARTICLES, GAS SENSORS USING THE SAME AS A SENSING MATERIAL THEREOF, AND MANUFACTURING METHODS THEREOF - Provided are a composite metal oxide material, a method of manufacturing the same, and a gas sensor using the same as a sensing material thereof. The composite metal oxide material may include polycrystalline nanofibers and at least one of microparticles and nanoparticles. The use of the composite metal oxide material makes it possible to improve structural, mechanical, thermal, and lifetime stabilities of the gas sensor. Further, the presence of the microparticles and/or nanoparticles allows the gas sensor to have a base resistance lower than that of a nanofiber-based gas sensor. Since the microparticles and/or nanoparticles are attached to the nanofibers, the composite metal oxide material can have an increased mobility of electrons or holes and an increased surface area, and thus, the gas sensor can have fast response/recovery speeds and high gas sensitivity. | 02-11-2016 |
