| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 422083000 | Means for analyzing gas sample | 88 |
| 20090214389 | GAS SENSOR - A gas sensor including: a gas detection element; a metal shell extending in an axial direction; and a metal cylinder extending in an axial direction, wherein a leading end portion of the metal cylinder surrounds a base end portion of the metal shell and is fixed to the metal shell via a circumferential welded portion. The metal shell includes: Fe in an amount equal to or more than 50.0 mass %; C in an amount of 0.02 mass % to 0.15 mass %; Cr in an amount of 11.5 mass % to 18.0 mass %; and Nb in an amount equal to or more than twice amount of C in mass %. | 08-27-2009 |
| 20130028791 | HYDROGEN-ABSORBING ALLOY AND HYDROGEN SENSOR USING THE ALLOY - A hydrogen sensor using a hydrogen-absorbing alloy containing an Mg—Ni-based alloy and a Zr—Ti-based alloy includes a substrate ( | 01-31-2013 |
| 20130064715 | Site analysis system for the calculation of the isotope ratio of carbon in several gas species by means of a single analyser - The present invention relates to a system of analysis, which can be used in a mobile laboratory in a drilling site situation or in a similar situation, suitable for measuring (preferably in relation to at least two partially gaseous species, which derive preferably from a mixture extracted from a drilling mud, for example, methane, ethane, propane and/or any other heavier hydrocarbons) the quantities of the different isotopes of at least a same chemical element (preferably the quantities of | 03-14-2013 |
| 20090010808 | Bio-sensor and bio-sensor reporting system - A biosensor unit that can be wall mounted in a location to perform testing of ambient air for bio-contaminants. This could contain an air filter for collecting contaminants and a micro-laboratory on a chip or otherwise situated within the unit to perform DNA or RNA binding tests for specific biological targets. Information from such units distributed within an environment could be communicated to one or more central locations via the internet or other communication means to be logged or recorded or to produce reports or alarms. | 01-08-2009 |
| 20110293480 | SENSOR THAT COMPENSATES FOR DETERIORATION OF A LUMINESCABLE MEDIUM - A sensor that generates an output signal in response to a stimulus, wherein the output signal is generated with a predetermined relationship to one or more properties of the stimulus such that the one or more properties of the stimulus can be determined as a function of the output signal. In one embodiment the sensor comprises a component, a sensor processor, and a transmitter. The component deteriorates, thereby causing predictable fluctuations in the predetermined relationship between the output signal and the one or more properties of the stimulus. The sensor processor provides information related to the deterioration of the component. The transmitter wirelessly transmits the information provided by the processor. | 12-01-2011 |
| 20100028209 | ORGANIC SENSOR DEVICE AND ITS APPLICATIONS - The invention is characterised in that it has a layer of organic material sensitive to changes in pressure, voltage, deformation, gases and/or temperature; wherein said organic layer consists of at least one conductive salt or complex including a molecule A and a dopant D, said molecule A being an electron donor or acceptor organic molecule or macromolecule capable of forming a conductive salt or complex, which without doping is not conductive, and with the presence of dopant D becomes a compound that is donor or acceptor of electrons and capable of forming conductive salt or complex with the molecule or macromolecule A; and a base substrate, in close contact with said layer of organic material. The sensor device is useful in molecular electronics or plastic electronics, in particular, in the field of organic sensors. | 02-04-2010 |
| 20090263287 | FUNCTIONALIZED PARTICLES FOR COMPOSITE SENSORS - A chemical sensor having a transducer element and a layer of composite material including a polymer matrix and a solid particulate filler disposed in the polymer matrix provides chemical sensors exhibiting improved properties. In particular, the device allows polymer matrix materials to be selected based primarily on diffusion properties, strength, stability and other physical characteristics substantially independent of limitations and compromises that arise when attempting to synthesize polymers having specific types of sensory groups chemically bound to the polymer. The invention also allows greater ability to modify sensor response characteristics by appropriate modification of the particulate filler, whereby a diverse sensor array may be fabricated more easily and at a lower cost. | 10-22-2009 |
| 20090263286 | SENSOR - A sensor includes: a sensor element extending in an axial direction comprising a leading end portion exposed to a gas measurement object; a metal shell covering a periphery of the sensor element; an outer cylinder member fixed to a rear end side of the metal shell, the outer cylinder member being composed of a first metal material; and a protection outer cylinder member covering an outer surface of the outer cylinder member, the protection outer cylinder being composed of a second metal material. The outer cylinder member further includes a sealing part in contact with a circumference of the protection outer cylinder member, and a spaced part positioned closer to a leading end side than the sealing part, and spaced from the protection outer cylinder member. The first metal material is less subject to rusting than the second metal material. | 10-22-2009 |
| 20080206106 | Method and apparatus for rapidly concentrating particles for analysis of explosives - A fast alternative for detecting dangerous or illegal substances is taught that improves upon the relatively slow conventional batch method of collecting and concentrating particles in filters. The new method concentrates the particles on-line and almost instantaneously, taking advantage of their inertia. Particles are thus concentrated on the fly from a large gas sample flow rate into a small gas flow rate, where they are rapidly volatilized and their vapors sensed in an analytical instrument such as a mass spectrometer or an ion mobility spectrometer. | 08-28-2008 |
| 20090110604 | Substrates for nitric oxide releasing devices - The present disclosure relates to substrates associated with nitric oxide. | 04-30-2009 |
| 20090291026 | Catalytic Alloy Hydrogen Sensor Apparatus and Process - An apparatus comprising a processing unit; a feed conduit and an effluent conduit connected to the processing unit; at least one operating parameter device associated with the processing unit, the feed conduit, the effluent conduit or a combination thereof; a catalytic alloy hydrogen sensor in fluid communication with the processing unit, the feed conduit, the effluent conduit or a combination thereof; and a computer processor electrically connected to the catalytic alloy hydrogen sensor, has been developed. A pressure indicator may be positioned to indicate the pressure of fluid passing through the catalytic alloy hydrogen sensor and there may be an electrical connection between the computer processor and the pressure indicator. The catalytic alloy hydrogen sensor may be a palladium-nickel catalytic alloy hydrogen sensor. | 11-26-2009 |
| 20090142233 | Gas sensor system - A system including a sensor and a sensor holder. The sensor includes an inlet port for receiving a gas sample and an outlet port for exhausting a portion of the gas sample. The sensor generates an output signal indicative of an oxygen concentration of the gas sample. The sensor holder removably receives and contains the sensor and includes an inlet port for communicating the gas sample to the sensor and an outlet port for receiving the exhausted portion of the gas sample from the sensor. The inlet port of the sensor holder is aligned and sealably interfaced with the inlet port of the sensor such that the inlet ports defining a common inlet bore. The outlet port of the sensor holder is aligned and sealably interfaced with the outlet port of the sensor such that the outlet ports defining a common outlet bore. | 06-04-2009 |
| 20110142719 | CARBON MONOXIDE (CO) MICROSIR SENSOR SYSTEM - The present invention provides very small low cost apparatus and method for determining the concentration and/or hazard from a target gas by means of optically monitoring one or more sensors that responds to carbon monoxide. The apparatus comprises a photon source optically coupled to the sensor and the photon intensity passing through the sensor is quantified by one or more photodiode(s) in a system, so that the photon flux is a function of at least one sensor's response to the target gas, e.g., transmits light through the sensor to the photodiode. The photocurrent from the photodiode is converted to a sensor reading value proportional to the optical characteristics of the sensors and is loaded into a microprocessor or other logic circuit. In the microprocessor, the sensor readings may be differentiated to determine the rate of change of the sensor readings and the total photons absorbed value may be used to calculate the CO concentration. | 06-16-2011 |
| 20090220384 | INTEGRATED PARAFOIL THREAT AGENT SENSOR SYSTEM AND METHODS - A method for collecting and sensing a column of air in near real-time to detect one or more agents dispersed within the air column is described. The method includes passing the column of air through a port in a parafoil, the parafoil configured with a flow-through sensor suite located in the port and operable such that the column of air passes through the sensor suite, operating the sensor suite to test the column of air for the one or more agents, and receiving test results from the sensor suite. | 09-03-2009 |
| 20090257919 | ANTIGEN EXPOSURE CHAMBER SYSTEM - An object of the present invention is to solve the problems in conventional art antigen exposure chambers, and specifically, to provide an antigen exposure chamber system capable of simultaneously exposing a large number of test objects in a chamber to a uniform antigen (pollen, mite or house dust, etc.) in all seasons. In order to achieve the above object, in an antigen exposure chamber system according to the present invention, an outdoor air is supplied via an outdoor air diffuser | 10-15-2009 |
| 20100178209 | Hydrogen Sensor - In a hydrogen sensor ( | 07-15-2010 |
| 20090117007 | GAS SENSOR - A gas sensor including a detection element having a stacked structure configured to detect a specified gas component contained in a gas to be detected. The detection element includes: a sensing portion including one or more solid electrolyte layers containing a first material as a main component and having a first surface and a second surface opposite the first surface; a first portion stacked on the first surface and including one or more first base layers containing a second material as a main component different from the first material; and a second portion stacked on the second surface and including one or more second base layers containing the second material. A total thickness of the one or more second base layers in a stacking direction is not less than 80% but not more than 120% of a total thickness of the one or more first base layers. | 05-07-2009 |
| 20100054998 | HUMIDITY CONTROL SYSTEM FOR THE SENSING CELL OF AN ANALYTE PERMEATION TESTING INSTRUMENT - A humidity control system for an analyte permeation testing instrument. The system includes (i) an analyte permeation testing instrument, (ii) a sensor for sensing a target analyte, (iii) a humidity control chamber, and (iv) a selectively permeable membrane permeable to water vapor and impermeable to the target analyte. The analyte permeation testing instrument defines a testing chamber operable for engaging a test film such that the testing chamber is sealingly separated by the test film into a first cell and a second cell throughout a permeation testing period. The sensor is placed in fluid communication with the first cell. The humidity control chamber is positioned adjacent the first cell and in fluid communication with both a source of gas having a known humidity and the first cell, with the selectively permeable membrane sealingly separating the humidity control chamber from the first cell. | 03-04-2010 |
| 20090028756 | Patches for non-intrusive monitoring of oxygen in packages - This disclosure describes an Oxygen sensing patch that can be attached to the interior surface of packages for oxygen interrogation inside the package. The Oxygen sensing patch is integrated into the inside of the package during the packaging manufacturing process and, when used with a blue LED and fluorometer, will quantitatively report the amount of oxygen in the package. The Oxygen sensing patch is suitable for measuring oxygen in gas, such as headspace applications, and in liquid. Oxygen is sensed by measuring the phase shift of fluorescence of the fluorophore immobilized in the Oxygen sensing patch. The patch can be non-intrusively interrogated by a light source. The interrogation can be done using a phase fluorometer where oxygen level is desired, or inspected visually for color change using a hand held blue LED. | 01-29-2009 |
| 20110081276 | PARTICULATE SENSING ELEMENT AND PARTICULATE SENSOR HAVING THE PARTICULATE SENSING ELEMENT - A particulate sensing element that detects a concentration of electrically conductive particulates PM in a gas to be measured includes a sensing portion exposed to the gas to be measured in which a pair of sensing electrodes that face each other formed with a predetermined gap therebetween on a surface of an electrically insulating heat resistant base plate, and a heating element that heats the sensing portion to a predetermined temperature, wherein a catalyst layer that can oxidize the electrically conductive particulates PM is formed at least on a part of a portion except the sensing portion exposed to the gas to be measured. | 04-07-2011 |
| 20120148451 | DEVICE AND METHODS OF DETECTION OF AIRBORNE AGENTS - Provided are methods, devices and systems that utilize free-surface fluidics and SERS for analyte detection with high sensitivity and specificity. The molecules can be airborne agents, including but not limited to explosives, narcotics, hazardous chemicals, or other chemical species. The free-surface fluidic architecture is created using an open microchannel, and exhibits a large surface to volume ratio. The free-surface fluidic interface can filter interferent molecules, while concentrating airborne analyte molecules. The microchannel flow enables controlled aggregation of SERS-active probe particles in the flow, thereby enhancing the detector's sensitivity. | 06-14-2012 |
| 20110158854 | HYDROGEN CONCENTRATION MEASURING INSTRUMENT - This invention is to obtain a highly reliable measurement result by correcting a hydrogen concentration by the use of a concentration of oxygen contained in a measurement gas, and the hydrogen concentration measuring instrument comprises a hydrogen concentration measuring part | 06-30-2011 |
| 20090317300 | Method and apparatus for determining a concentration of a component in an unknown mixture - The invention relates to a method and apparatus for determining a concentration of a component in an unknown mixture. The method includes the steps of preparing a reactant having a specified pH level and a specified temperature and combining the unknown mixture with the reactant. The method further includes varying the pH level and temperature of the combination of the reactant and the unknown mixture to facilitate converting at least one selected component. Upon varying the pH level and temperature, the method will release volatiles from the selected component(s). Based on these released volatiles, which indicate the concentration of the selected component(s), the method detects the indication. The apparatus for determining a concentration of a component in an unknown mixture includes a container having a specified volume, a reactant chamber, and a sample chamber. The receptacle contains a reactant, placed within the reactant chamber, having a predetermined pH level and a predetermined volume. The receptacle also has a headspace sampling interface in contact with the container for permitting connection to a headspace sampling device and a sample introduction interface for permitting connection to a sample injector to introduce a sample into the sample chamber. | 12-24-2009 |
| 20080279726 | Cuvette - The invention relates to a cuvette ( | 11-13-2008 |
| 20100158758 | Gas Sensor Assembly - A gas sensor assembly may include a housing defining a chamber. A gas sensor may be mounted in the chamber. An inlet tube may be secured to the housing and extend into the chamber of the housing: The inlet tube may define a passage providing fluid communication between outside the housing and the chamber of the housing. | 06-24-2010 |
| 20100196208 | IGNITION OR PLASMA GENERATION APPARATUS - There is provided an ignition or plasma generation apparatus that eliminates the need for resonance means in a combustion chamber and simplifies the electrode structure within the combustion chamber in an instance where energy from each of a spark discharge and microwaves is used to ignite an air-fuel mixture gas in an internal combustion engine. The ignition or plasma generation apparatus includes a mixing circuit for mixing a high-voltage pulse from a high-voltage pulse generator and microwave energy from a microwave generator; and an ignition plug into which an output from the mixing circuit is supplied, the plug used for introducing the output into a combustion chamber of an internal combustion engine. The output supplied from the mixing circuit to the ignition plug is supplied in a manner in which the microwave energy and the high-voltage pulse are superimposed on each other on a same transmission line. | 08-05-2010 |
| 20090047182 | Electrostatic Fluid Accelerator for Controlling a Fluid Flow - An electrostatic fluid accelerator includes an electrode array comprising an array of corona discharge electrodes and an array of accelerating electrodes for moving a fluid. A detector is configured to sense a constituent component of the fluid. A control circuit supplies power to the electrode array and operates the electrostatic fluid accelerator in response to an output from the detector. | 02-19-2009 |
| 20090148347 | NANO-CRYSTALLINE COMPOSITE-OXIDE THIN FILM, ENVIRONMENTAL GAS SENSOR USING THE THIN FILM, AND METHOD OF MANUFACTURING THE ENVIRONMENTAL GAS SENSOR - A nano-crystalline composite-oxide thin film for an environmental gas sensor, an environmental gas sensor using the thin film, and a method of manufacturing the environmental gas sensor are provided. The nano-crystalline composite-oxide thin film is formed of hetero-oxide nano-crystalline particles having independent crystalline phases from each other, and the environmental gas sensor including the thin film has excellent characteristics including high sensitivity, high selectivity, high stability and low power consumption. | 06-11-2009 |
| 20080219895 | GAS SENSOR - A gas sensor which includes walls delimiting a gas detection chamber, and having an introduction port (or an inlet) through which an observed gas is introduced into the gas detection chamber, a measuring element disposed in the gas detection chamber and measuring concentration of a subject gas contained in the observed gas, and a heater constituting at least a portion of the walls, the portion facing the gas detection chamber. | 09-11-2008 |
| 20090280031 | METHODS FOR USE OF A SENSITIVE LAYER FOR HYDROGEN SULPHIDE DETECTION WITH SAW/BAW DEVICES - Methods can be adapted for design of a sensitive monolayer for detection of hydrogen sulphide at room temperature with SAW/BAW devices. The sensitive monolayer can be synthesized based on chemical compounds, which belongs to a class of thiacalix[n]arenas, mercapto halides, mercapto alcohols and chloromethylated thiacalix[n]arenas. The sensitive monolayer can be directly immobilized or anchored at the surface of a piezoelectric quartz substrate in a covalently bonded manner by means of direct printing process. The piezoelectric quartz substrate can be activated in basic medium or in acid medium before the immobilization of the sensitive monolayer in order to increase the population of OH groups. Thus, the synthesized sensitive monolayer exhibits a high site density, fast response and long-term stability for H | 11-12-2009 |
| 20120156101 | ASSEMBLY FOR THE CONTROLLED FEEDING AND DELIVERY OF A GAS MIXTURE INTO AN ANALYSIS CHAMBER - An assembly for a controlled feeding and delivery of a gas mixture into an analysis chamber includes at least one metering line, a flow limiter disposed in the at least one metering line, a first capillary disposed in the at least one metering line downstream of the flow limiter, an analysis chamber configured to receive the gas mixture from the at least one metering line, an outlet line, and a bypass line with a nozzle disposed therein. The bypass line branches off from the at least one metering line downstream of the flow limiter and upstream of the first capillary. The bypass line opens into the outlet line downstream of the analysis chamber. | 06-21-2012 |
| 20100209301 | FUNCTIONALIZED PARTICLES FOR COMPOSITE SENSORS - A chemical sensor having a transducer element and a layer of composite material including a polymer matrix and a solid particulate filler disposed in the polymer matrix provides chemical sensors exhibiting improved properties. In particular, the device allows polymer matrix materials to be selected based primarily on diffusion properties, strength, stability and other physical characteristics substantially independent of limitations and compromises that arise when attempting to synthesize polymers having specific types of sensory groups chemically bound to the polymer. The invention also allows greater ability to modify sensor response characteristics by appropriate modification of the particulate filler, whereby a diverse sensor array may be fabricated more easily and at a lower cost. | 08-19-2010 |
| 20120087834 | APPARATUS FOR SYNTHESIS AND ASSAYING OF MATERIALS WITH TEMPERATURE CONTROL ENCLOSURE ASSEMBLY - An apparatus for material synthesis and assaying includes a well assembly having a well containing material. The well assembly is configured such that the material may be synthesized within the well. A measurement device, including a gas delivery and control system is operatively connected to the well assembly and is configured to provide gas to the well for measuring at least one property of the material in the well. An enclosure assembly is provided that includes an enclosure substantially enclosing the gas delivery and control system and is configured to maintain the gas at a predetermined temperature. | 04-12-2012 |
| 20120087833 | APPARATUS FOR SYNTHESIS AND ASSAYING OF MATERIALS - An apparatus for synthesis and assaying of materials is provided that significantly improves throughput efficiency by allowing for material synthesis and assaying in the same assembly while possessing the ability to reach higher pressures and higher temperatures than existing designs capable of synthesis and assaying in the same assembly. In addition, the apparatus provides for gas flow over the material sample, allowing for a number of materials to be synthesized within the apparatus by gas synthesis. | 04-12-2012 |
| 20130011299 | Apparatus for Testing Catalyst - A catalyst-testing apparatus includes a heater, a U-shaped reactor, a gas flow controller, a liquid flow controller, two pressure gauges, a separator and a chromatograph. In use, under control of the gas flow controller, natural gas and air are directed to the U-shaped reactor. Under control of the liquid flow controller, pure water is directed to the U-shaped reactor. The pure water travels down the wall of the U-shaped reactor. The pure water is heated and turned into steam in a front section of the U-shaped reactor. Together with the natural gas and the air, the steam is directed to a catalyst zone in the U-shaped reactor for reaction. With the chromatograph, volumes and compositions of resultant gases are analyzed. Thus, the stability of the performance of the catalyst is tested, and the performance of the catalyst for producing hydrogen by is revealed. | 01-10-2013 |
| 20130017120 | CARBON MONOXIE (CO) MICROSIR SENSOR SYSTEM - A very small low cost apparatus and method are provided for determining concentration from a target gas by means optically monitoring one or more sensors that respond to carbon monoxide. The apparatus comprises a photon source optically coupled to the sensor and the photon intensity passing through the sensor is quantified by one or more photodiode(s) in a system, so that the photon flux is a function of at least one sensor's response to the target gas, e.g., transmits light through the sensor to the photodiode. The photocurrent from the photodiode is converted to a sensor reading value proportional to the optical characteristics of the sensors and is loaded into a microprocessor or other logic circuit. In the microprocessor, the sensor readings may be differentiated to determine the rate of change of the sensor readings and the total photons absorbed value may be used to calculate the CO concentration. | 01-17-2013 |
| 422084000 | Breath tester | 6 |
| 20090196796 | Breath Delivery System and Method - Some embodiments of the invention provide a mouthpiece for use with an electronic analyzer for breath analyte detection in an individual. The mouthpiece includes a biosensor and a hydration system. The biosensor includes a chemically active area where a chemical reaction takes place and the hydration system delivers a liquid to the chemically active area of the biosensor to at least one of enhance, enable, and facilitate the chemical reaction. The mouthpiece further includes hardware to transmit breath analyte data. | 08-06-2009 |
| 20100166613 | Methods and systems for presenting an inhalation experience - Methods, computer program products, and systems are described that include detecting in an exhalant at least one indication of bioactive agent use by an individual and altering at least one artificial sensory experience at least partly based on the at least one indication of bioactive agent use by an individual. | 07-01-2010 |
| 20090053110 | MULTIFUNCTIONAL EARPHONE AND ALCOHOL MONITORING SYSTEM USING THE SAME - A multifunctional earphone includes an earphone body, and an alcohol-testing module provided in the earphone body. The alcohol-testing module includes an alcohol-testing unit provided with an alcohol concentration-measuring program to measure an alcohol concentration of a user of the multifunctional earphone to obtain a measured alcohol concentration value; and a communication unit to receive the measured alcohol concentration value from the alcohol-testing unit, and analyze the measured alcohol concentration value. | 02-26-2009 |
| 20100226824 | Drying substances, preparation and use thereof - There is provided herein a dryer polymer substance comprising a polymer grafted with a compound having sulfonic groups, wherein the substance is adapted to pervaporate a fluid such as water, water vapor or both. There is further provided a process for the preparation of a dryer polymer substance adapted to pervaporate a fluid, the process includes processing a polymer into a desired form, activating at least a portion of the polymer, and grafting the activated portion of the polymer with a compound having groups adapted to be sulfonated. | 09-09-2010 |
| 20100226823 | Drying substances, preparation and use thereof - There is provided herein a dryer polymer substance adapted to pervaporate a fluid (such as water, water vapor or both), the polymer substance includes: a porous support member having a plurality of pores, wherein at least a portion of the pores are filled with a cross-linked co-polymer comprising (i) a cationic monomer and an anionic monomer, (ii) a zwitterionic monomer, or a combination thereof. The substance may include a membrane or a tube. There is further provided herein a process for the preparation of a dryer polymer substance adapted to pervaporate a fluid (such as water, water vapor or both), the process includes impregnating into at least a portion of the pores of a porous support member a solution which comprises: (i) a cationic monomer and an anionic monomer, (ii) a zwitterionic monomer, or a combination of (i) and (ii), graft co-polymerizing the anionic monomer and the cationic monomer and/or the zwitterionic monomer within at least a portion of the pores to form a co-polymer, and cross-linking the co-polymer, such that the pores of the support member are at least partially grafted with a cross-linked co-polymer bound to the support member. | 09-09-2010 |
| 20100028210 | BREATHALYZER TEST DEVICE - A breathalyzer test device includes vigilance detecting means for detecting the vigilance of a test subject, and breathalyzer test means for performing a breathalyzer test on the subject based on the vigilance detected by the vigilance detecting means. | 02-04-2010 |
| 422086000 | Including means reacting gas with color indicator | 12 |
| 20130078151 | LIQUID CRYSTAL GAS SENSOR CELL AND THE USE THEREOF - 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. | 03-28-2013 |
| 20130071290 | CARBON MONOXIDE SENSOR SYSTEM AND RELATED METHODS - A miniature lower cost optical sensing apparatus and method are provided for determining the concentration and/or hazard from a target gas by means of IR or visible photon monitoring one or more sensors that responds to carbon monoxide. The apparatus comprises a photon source optically coupled to the sensor and at least a portion of the photon intensity passing through the sensor is quantified by one or more photodiode(s) in a system, so that the photon flux is a function of at least one sensor's response to the target gas, e.g., transmits light through the sensor to the photodiode. The photo current from the photodiode is converted to a sensor reading value proportional to the optical characteristics of the sensors and is loaded into a microprocessor or other logic circuit. In the microprocessor, the sensor readings may be differentiated to determine the rate of change of the sensor readings and the total photons absorbed value may be used to calculate the CO concentration and/or dose. | 03-21-2013 |
| 20090185956 | pH SENSITIVE INDICATOR DEVICE - A pH sensitive indicator device comprises a body including at least a portion of a translucent or transparent gas permeable material and an acid base colour change or halochromic material in or associated with the gas permeable material. The halochromic material can be received in a recess within the body of a gas permeable material or incorporated into the body of a gas permeable material. The gas permeable material can comprise a silicone elastomer. | 07-23-2009 |
| 20100239465 | Fluorescence Sensor for Detecting Gas Compositions - A fluorescent sensor for the detection of gas compositions has a carrier substrate and a fluorescent layer. The carrier substrate and fluorescent layer consists of a gas-permeable polymer matrix with an embedded fluorescent dye. A diffusion layer of gas-permeable ceramics and/or polymers is arranged over the fluorescent layer and is adapted to cause a time delay of the gas diffusion from a detected-environment to the fluorescent layer and from the fluorescent layer to a detected-environment. | 09-23-2010 |
| 20100135858 | Ink Composition and Oxygen Indicator - An ink composition comprising a redox compound as dye, a volatile agent as reducing agent, a polymer material as binder and a volatile solvent, wherein said ink composition has a viscosity of 3 to 150 mPas when said ink composition is used for printing. | 06-03-2010 |
| 20100183480 | OZONE DETECTING DEVICE - An aqueous solution is formed by dissolving a dye made of alizarin and a humectant made of glycerin, and alkalized by dissolving a base (alkaline substance), thereby preparing a detector solution ( | 07-22-2010 |
| 20120148452 | NON INVASIVE GAS ANALYSIS - A sensing device is provided. The device comprises a gas permeable member, a sensing member and optical means. | 06-14-2012 |
| 20100310425 | Real-time indicator detector - The present invention pertains generally to a detection means for indicia provided by a primary device, and more particularly, to a detection sensor assembly adapted to measure at least one indicator moiety influenced by changing gaseous environments. A detection sensor assembly performs to collect and respond to changing gaseous environments in real-time, conveying that information to a user of the detection sensor assembly sufficiently quickly and accurately such that the user can respond to the changing gaseous environments in a timely manner. The detection sensor assembly operates using an incident receiver in the form of an indicator sensor. An indicator moiety responsive to particular elements or compounds of interest in a gaseous environment is positioned proximal to the indicator sensor such that changes in the indicator moiety are captured by operation of the indicator sensor. | 12-09-2010 |
| 20110217208 | MEASURING FLOW PROPERTIES OF MULTIPLE GAS NOZZLES OF A GAS DISTRIBUTOR - A gas nozzle measurement apparatus comprises a controllable gas source to provide across a gas plate having gas nozzles, a flow of gas at a constant pressure or constant flow rate, and a sensor plate sized to cover an area comprising at least a portion of the front face of the gas plate. The sensor plate comprises gas flow sensors arranged in locations that correspond to positions of individual gas nozzles of the gas nozzles of the gas plate such that each gas flow sensor can measure a pressure, flow rate, density, or velocity of a gas stream passing through the individual gas nozzle that faces the gas flow sensor, and generate a signal indicative of, or display, the pressure, flow rate, density, or velocity of the gas stream passing through the individual gas nozzle. | 09-08-2011 |
| 20110318230 | Chemical Sensor with an Indicator Dye - A chemical sensor based on an indicator dye wherein a light transmissive element containing the indicator dye is made of a hygroscopic polymer. The polymer may be, for example, a polyimide or PMMA or other polymer. In an alternative embodiment the light transmissive element is doped with metal nanocolloidal particles. One embodiment may include a reference photodiode and differential amplifier to compensate for the fluctuations of the intensity of the light source. The light source may be pulse modulated. The sensor may include calibration means comprising a reference sample of the chemical to be detected and a precision delivery means. A method of fabricating the polymer and metal nanocolloid is disclosed wherein the nanocolloid is produced by generating a pulsed laser plasma in a suspension of metal particles and an organic solvent and adding the resulting solvent colloid to a solution containing the polymer. | 12-29-2011 |
| 20120063956 | System for Visual and Electronic Reading of Colorimetric Tubes - Gas detector tubes may be used to determine a concentration of target gases in air. The gas detector tubes described may be read either by and optical reader or visually by the user. A gas detector tube reader having an optical reader capable of reading a length of stain, a color change and color density of a reagent in a gas detector tube. The gas detector tube may further comprise sensors for measuring the environmental conditions during sampling. | 03-15-2012 |
| 422087000 | Strip indicator | 1 |
| 20080267825 | Gas detecting apparatus - A gas detecting apparatus includes a plate including a first reactive surface and a second reactive surface each coated with a chemical reagent which is capable of causing a color reaction with a particular gas, a protective member covering the first reactive surface, a transparent protective member covering the second reactive surface, a protective package enclosing therein the plate with the first reactive surface covered with the protective member and the second reactive surface covered with the transparent protective member, and a connector connecting the protective member and the protective package to each other. | 10-30-2008 |
| 422088000 | Including means for adsorbing or absorbing gas into or onto liquid or solid media | 16 |
| 20100215546 | NOx Adsorptive Films For NOx Sensor Technologies - A mesoporous, transition metal oxide material having an average pore diameter ranging from 2 to 20 nm, a basic surface character defined by an isoelectric point>pH 7, and a specific surface area greater than 50 m | 08-26-2010 |
| 20110116974 | FUNCTIONALIZED MONOLAYERS FOR CARBON DIOXIDE DETECTION BY A RESONANT NANOSENSOR - A resonant nanosensor apparatus associated with a functionalized monolayer for detecting carbon dioxide and a method of forming the same. A wafer including a sensing vibrating beam and a reference vibrating beam may be functionalized with a functional group in order to form a sensing self monolayer. The sensing self assembled monolayer may be configured by bridging oxygen or carbon atoms covalently bonded with respect to the vibrating beams. A liquid solution of hydrochloric acid may then be applied to the sensing self assembled monolayer at the surface of the reference beam by a direct printing process to obtain a reference monolayer. The liquid solution of HCl transforms the functional groups responsible for the carbon dioxide detection into protonated groups, which do not react with carbon dioxide, but possess visco-elastic properties similar to that of the sensing monolayer. | 05-19-2011 |
| 20080253932 | Multiple Sample Gas Sorption Tester - Embodiments of the invention contemplate an apparatus that determines gas sorption properties of a large number of material samples simultaneously, by sequentially measuring the pressure in a plurality of sample chambers until all chambers have reached equilibrium pressure. In most applications, it is most useful to quantify the sorption capacity of a material under specific conditions, i.e., at a certain temperature and pressure. Because sorption capacity is determined by bringing a material sample to an equilibrium state with a dosing gas, detailed kinetic data related to the sorption properties of a material are not absolutely necessary. Therefore, complete pressure-time curves are not typically necessary, and only the equilibrium pressure of a material sample for a given quantity of dosing gas is required. | 10-16-2008 |
| 20120121467 | CHEMICAL VAPOR SENSOR WITH IMPROVED TEMPERATURE CHARACTERISTICS AND MANUFACTURING TECHNIQUE - A vapor sensor includes a non-conducting filament less than 2 millimeters in diameter and greater than 1 millimeters in length. The filament is coated with a resilient material. A layer of conducting particles is embedded in the resilient material and forms a conducting path between ends of the filament. | 05-17-2012 |
| 20100209302 | Apparatus With A Connection Between Two Capillaries - An apparatus is provided for fluidly coupling a furnace to a gas chromatograph or other device for separating gaseous components. The apparatus includes a first capillary, which forms a reactor tube positioned within the furnace, connected to a second capillary. The capillaries are joined by bonding, adhesion, soldering or pressing in a manner that established a durable, gastight connection. | 08-19-2010 |
| 20100215547 | CHEMICAL VAPOR SENSOR WITH IMPROVED AGING AND TEMPERATURE CHARACTERISTICS - A chemical vapor sensor includes an polymer layer and a first stratum of electrically conductive particles partially embedded in the polymer layer. A second stratum of electrically conductive particles adheres to the first stratum of particles primarily through particle-to-particle attractive forces. | 08-26-2010 |
| 20130115137 | SENSING MATERIALS FOR SELECTIVE AND SENSITIVE DETECTION OF HYDROCARBONS AND ACIDS - A method and apparatus including: 1) Synthesis of a sensing material with high density of binding sites and excellent selectivity for toxic hydrocarbons and acid vapors; 2) Coating of the sensing material onto the surface of sensors, such as quartz crystal tuning forks; and 3) integration of the coated sensors with proper sample conditioning unit. The device achieves high sensitivity and selectivity, and has been tested in various field environments. | 05-09-2013 |
| 20130101466 | CANTILEVERED PROBE DETECTOR WITH PIEZOELECTRIC ELEMENT - A disclosed chemical detection system for detecting a target material, such as an explosive material, can include a cantilevered probe, a probe heater coupled to the cantilevered probe, and a piezoelectric element disposed on the cantilevered probe. The piezoelectric element can be configured as a detector and/or an actuator. Detection can include, for example, detecting a movement of the cantilevered probe or a property of the cantilevered probe. The movement or a change in the property of the cantilevered probe can occur, for example, by adsorption of the target material, desorption of the target material, reaction of the target material and/or phase change of the target material. Examples of detectable movements and properties include temperature shifts, impedance shifts, and resonant frequency shifts of the cantilevered probe. The overall chemical detection system can be incorporated, for example, into a handheld explosive material detection system. | 04-25-2013 |
| 20130121884 | DEVICE AND METHODS OF DETECTION OF AIRBORNE AGENTS - Provided are methods, devices and systems that utilize free-surface fluidics and SERS for analyte detection with high sensitivity and specificity. The molecules can be airborne agents, including but not limited to explosives, narcotics, hazardous chemicals, or other chemical species. The free-surface fluidic architecture is created using an open microchannel, and exhibits a large surface to volume ratio. The free-surface fluidic interface can filter interferent molecules, while concentrating airborne analyte molecules. The microchannel flow enables controlled aggregation of SERS-active probe particles in the flow, thereby enhancing the detector's sensitivity. | 05-16-2013 |
| 422089000 | Gas chromatography | 4 |
| 20080260587 | Hydrocarbon Preparation System - An apparatus for the preparation of hydrocarbons for mass spectrographic analysis by their conversion into carbon dioxide. The apparatus uses an isothermic environment for chromatography in conjunction with separate columns tuned to isolate specific hydrocarbons. The apparatus includes a valve block ( | 10-23-2008 |
| 20100272610 | METHOD OF ANALYZING INORGANIC PHOSPHORUS IN ORGANIC MATERIAL AND APPARATUS THEREFOR - A method for simply and rapidly analyzing inorganic phosphorus contained in an organic material and an apparatus for analyzing for carrying out the method of analyzing are provided. The method for analyzing inorganic phosphorus contained in an organic material includes the steps of pyrolyzing a sample composed of an organic material to gasify the sample, separating the pyrolyzed sample to fractions by gas chromatography, and detecting a fraction of a retention time corresponding to the inorganic phosphorus. The apparatus for analyzing inorganic phosphorus contained in an organic material includes gasification means for pyrolyzing a sample, and a gas chromatograph including a column for separating the pyrolyzed sample to fractions and a detector of a gas eluted from the column. | 10-28-2010 |
| 20130058830 | SENSOR SYSTEM USING A HOLLOW WAVEGUIDE - The present application provides a method for determining one or two parameters of a sensor system for detecting a gaseous sample. The sensor system comprises a light source to generate a light beam, a hollow waveguide to receive the light beam and the gaseous sample, and a detector to detect an absorption peak of the gaseous sample, where the length and inner diameter of the hollow waveguide satisfy relationships as disclosed herein. | 03-07-2013 |
| 20120263626 | Miniature Chemical Analysis System - An apparatus, according to one aspect, may include a chromatograph and a bulk acoustic resonator. The chromatograph may include a channel that is defined at least partially in a monolithic substrate. The channel may have an inlet to receive a sample and an outlet. A chromatography material may be included in the channel. The bulk acoustic resonator may have a first electrode and a second electrode that has a chemically functionalized surface. The chemically functionalized surface may be included in a chamber that is defined at least partially in the monolithic substrate and that is coupled with the outlet of the channel. Methods of making and using such apparatus, and systems including such apparatus, are also disclosed. | 10-18-2012 |
| 422090000 | With conductiometric detector | 1 |
| 20110200487 | CHEMICAL VAPOR SENSOR WITH IMPROVED AGING AND TEMPERATURE CHARACTERISTICS - A chemical vapor sensor includes an elastomeric material layer, a first stratum of electrically conducting particles bonded chemically to the surface of the elastomeric layer, and a second stratum of nonconducting or semiconducting particles adhering to the first stratum of particles primarily through nonchemical particle-to-particle attractive forces. | 08-18-2011 |
| 422091000 | With photometric detector | 2 |
| 20100054999 | HYDROGEN SENSOR AND HYDROGEN GAS DETECTING APPARATUS - A hydrogen sensor includes a thin film layer formed on a top surface of a planar optical transmission medium, and a catalyst layer formed on a top surface of the thin film layer. A first interface is created between the planar optical transmission medium and the thin film layer. A substrate is joined to a bottom surface of the planar optical transmission medium so that a second interface is created between the planar optical transmission medium and the substrate. On entering a first end portion of the planer optical transmission medium, light from a light source is spread by an entrance section, and the spread light is transmitted inside the planar optical transmission medium to a second end portion by being reflected by the first and second interfaces alternately. Light exiting from the second end portion is transmitted to an optical sensor by an exit light-collecting section. If the thin film layer is hydrogenated by the catalyst layer contacted by hydrogen, the amount of light reflected from the first interface reduces. Hydrogen gas is detected by the optical sensor detecting such reduction in the amount of light. | 03-04-2010 |
| 20090252650 | PORTABLE MEMS-BASED SPECTRAL IDENTIFICATION SYSTEM - A sensing arrangement detects a compound of interest within a gas sample. An amplifying fluorescent polymer produces an output signal that varies in response to an interaction of the amplifying fluorescent polymer with the compound of interest. Additionally, an infrared illumination source produces infrared electromagnetic energy that causes the amplifying fluorescent polymer to generate the output signal. A MEMS detector is positioned to receive the output signal generated by the amplifying fluorescent polymer, and produces an output electrical signal that is responsive to an interaction between the compound of interest and the amplifying fluorescent polymer. The output electrical signal is responsive to a quenching of the output signal of the amplifying fluorescent polymer. A pattern database stoics pattern data corresponding to characteristics of compounds of interest. | 10-08-2009 |
| 422093000 | Including means dividing sample stream into plural parallel segments having diverse treating means and the analytical result compared or combined | 1 |
| 20110236267 | Chemical and Biological Sensor - The present disclosure provides a sensor device. The sensor device may include an intake port for an air sample connected to a mixing chamber. The mixing chamber may contain at least one device for the introduction of a liquid or gel detection improvement agent, or at least one mechanical dispersal device for the introduction of a solid detection improvement agent. The detection improvement agent may be operable to interact with a chemical or biological agent in the air sample. The mixing chamber may also include at least one heating or cooling plate and at least device for the introduction of water or an aromatic solvent into the air sample as well as at least one detection element able to detect a chemical or biological agent in the air sample. The mixing chamber may be connected to an exhaust port. | 09-29-2011 |
| 422094000 | Combustible gas detector | 6 |
| 20080206107 | Gas sensor apparatus for automotive exhaust gas applications - A gas sensor apparatus and method of forming the same generally includes a gas sensor element comprising a heater and a plurality of electrodes. A ceramic substrate can be provided for supporting the electrodes on one side of the ceramic substrate and the heater on the opposite side of the ceramic substrate. The gas sensor element is preferably embedded in the ceramic substrate. The ceramic substrate also possesses a substantially circular shape in order to prevent a breakage of the gas sensor element, avoid thermal loss, and permit the gas sensor apparatus to withstand mechanical shock and high vibrations while occupying a minimal package space. | 08-28-2008 |
| 20080206108 | Single cell sensor for measuring the partial pressure of oxygen - A single cell oxygen sensor apparatus and method are disclosed. An yttrium-based stabilized layer having electrical terminals connected to the yttrium-based stabilized layer can be provided on a substrate, wherein the yttrium-based stabilized layer is excitable by a constant current applied to the electrical terminals. A plurality of electrodes are located on a side of the yttrium-based stabilized layer and a plurality of heater elements located on said substrate opposite said yttrium-based stabilized layer. The heater elements can maintain the yttrium-based stabilized layer at a particular temperature. A cavity is formed and located between the yttrium-based stabilized layer and the heater elements. The partial pressure of oxygen can be measured by comparing the partial pressure of oxygen within the cavity with respect to the partial pressure of oxygen in the atmosphere external to the single cell oxygen sensor apparatus. | 08-28-2008 |
| 20090035184 | HYDROGEN GAS SENSOR - The present invention provides a catalytic combustion type hydrogen gas sensor of a simple structure, which is capable of inhibiting the degradation of the sensitivity thereof over a long period of time even in the presence of a silicon compound being a catalyst poison. This hydrogen gas sensor is equipped with a detection element | 02-05-2009 |
| 20090016934 | GAS SENSOR WITH AT LEAST ONE CATALYTIC MEASURING ELEMENT - A gas sensor has shock resistance and temperature resistance attributes. The gas sensor includes at least one catalytic measuring element ( | 01-15-2009 |
| 422095000 | With thermoelectric detector | 2 |
| 20100221148 | COMBUSTIBLE GAS SENSOR - The present invention provides a combustible gas sensor that can realize a considerable improvement in the measurement sensitivity and the measurement precision by increasing the contact area between the measurement object gas and the oxidation catalyst particles, increasing the amount of heat generation of oxidation reaction in accordance therewith, and improving the transference of the oxidation reaction heat, while reducing the scale of the whole. | 09-02-2010 |
| 422096000 | Wheatstone bridge | 1 |
| 20090324449 | Gas Detection Apparatus - A gas detection apparatus A comprises a signal processing circuit | 12-31-2009 |
| 422098000 | Analysis based on electrical measurement | 11 |
| 20100272612 | Vapor Sensor Materials Having Polymer-Grafted Conductive Particles - A composition for sensor films is provided that detects chemical analytes within sensors, such as polymer-absorption chemiresistors (i.e., conductometric sensors). The disclosure provides robust sensor film compositions that have low resistance, high conductivity, and greater temperature stability and sensitivity to chemical analytes. Methods of making these sensor films are also provided. Sensor film compositions include a matrix having a polymer resin and a plurality of conductive particles comprising a polymer-grafted conductive particle. Blends of conductive particles are also contemplated. | 10-28-2010 |
| 20130058831 | CATALYTIC COMBUSTION TYPED GAS SENSOR - Provided is a catalytic combustion typed gas sensor of detecting a combustible gas having a concentration equal to or more than a predetermined value based on a raised electric resistance. Herein, combustion heat generated when a combustible gas contacts to a catalytic metal (or detection element) heated by passing electric current therethrough raises a temperature and electric resistance of the catalytic metal. The electric current is made to pass through the catalytic metal such that the temperature of the catalytic metal becomes a standby temperature which is calculated by subtracting the raised temperature portion from a desorption temperature. The combustion heat is generated when the combustible gas contacts to the catalytic metal. Note the catalytic metal adsorbs a silicone compound via a silicon (Si) poisoning process and then desorbs the resulting adsorbed silicone compound at the desorption temperature. The desorption temperature is set in the range over 350° C. to 600° C. | 03-07-2013 |
| 20100166614 | HYDROGEN-GAS CONCENTRATION SENSOR AND HYDROGEN-GAS CONCENTRATION MEASURING DEVICE - A hydrogen-gas concentration sensor comprises a substrate, and a plurality of hydrogen detecting films formed on the substrate, adjacent to one another. The hydrogen detecting films have a thin film layer, and a catalyst layer formed on the thin film layer. Each catalyst layer, when in contact with a hydrogen gas, exerts photocatalysis to hydrogenate each thin film layer reversibly and causes the electric resistance value thereof to change reversibly. The individual thin film layers have different sensitivities of a change in the hydrogen gas concentration vs. a change in the resistance value and different hydrogen gas concentration measurement ranges. The hydrogen-gas concentration sensor measures the hydrogen gas concentration with a thin film layer having a high sensitivity when the hydrogen gas concentration is low, and measures the hydrogen gas concentration with a thin film layer having a wide measurement range when the hydrogen gas concentration is high. | 07-01-2010 |
| 20100098593 | Sensitive Materials for Gas Sensing and Method of Making Same - A gas detection device comprising a measuring circuit, said measuring surface comprising a substrate, a resistance heater bonded to said substrate and a coating, said coating comprising SnO | 04-22-2010 |
| 20080317636 | GAS SENSOR DEVICES COMPRISING ORGANIZED CARBON AND NON-CARBON ASSEMBLY - This invention relates generally to gas sensors comprising organized assemblies of carbon and non-carbon compounds. The invention also relates to devices containing such gas sensors and analysis units. In preferred embodiments, the organized assemblies of the instant invention take the form of nanorods or their aggregate forms. More preferably, a nanorod is made up of a carbon nanotube filled, coated, or both filled and coated by a non-carbon material. | 12-25-2008 |
| 20090208376 | PHOTO-CATALYST OZONE DETECTOR - A photo-catalyst ozone detector includes a base. A positive electrode and a negative electrode are respectively disposed on the base. A photo-catalyst coating is disposed on the base for connecting the positive electrode and the negative electrode, and reacting with the ozone to detect ozone consistency, wherein the photo-catalyst coating contains titanium dioxide. | 08-20-2009 |
| 20090246084 | Gas Sensor - A gas sensor has a gas-sensitive layer with a surface area where the electron affinity depends on the concentration of a target gas brought in contact with the surface area. An electrical potential sensor is capacitively coupled to the surface area via an air gap. The surface area of the gas-sensitive layer is covered by an electric insulating layer that is inert to the target gas and is bonded to the gas-sensitive layer. The coating is designed in such a way that it is permeable for the target gas and a different, non-target gas that can be adsorbed on the surface area. The coating has different diffusion constants for the target gas and the non-target gas. The diffusion constants are coordinated with each other in such a way that the sensitivity of the gas sensor to the target gas increases when the target gas concentration exceeds a predetermined concentration threshold in the presence of the non-target gas. | 10-01-2009 |
| 20120009089 | THIN-FILM HIGH-ACTIVITY GAS SENSOR USING CORE-SHELL STRUCTURED COMPOSITE NANOPARTICLES AS SENSING MATERIAL AND METHOD OF MANUFACTURING THE SAME - Disclosed herein is a thin-film high-activity gas sensor, the sensitivity, selectivity and long-term stability of which can be greatly improved, the manufacturing process of which can be simplified, and which can be formed into a thin film and be miniaturized. | 01-12-2012 |
| 20100272611 | Gas Sensor With Improved Selectivity - The present invention relates to a gas sensor ( | 10-28-2010 |
| 20120282142 | GAS SENSOR - Volatile organic compounds or oxidizing gases are detected when the work function of a metal-organic framework is measured to produce a sensor signal. | 11-08-2012 |
| 20080226505 | Gas Sensor Assembly With Catalytic Element - A gas sensor assembly comprising a gas-sensitive element, and a first pulse modulation circuit comprising a first switching device is disclosed. The gas-sensitive element and the first switching device are arranged in series with a power supply. The first pulse modulation circuit further comprises a first control module adapted to control the first switching device in accordance with a monitored parameter of the gas-sensitive element, the parameter varying with the temperature of the element, thereby controlling the power consumed from the power supply by the gas-sensitive element. | 09-18-2008 |
