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| Number | Title | Issue Date |
| 8088333 | Thermoelectric sensor for analytes in a gas An apparatus for sensing at least one analyte in a gas. The apparatus includes a thermoelectric sensor having a layer of at least one analyte interactant that increases or decreases in temperature and at least one thermopile having a first contact pad and a second c... | 01/03/2012 |
| 8043564 | Copolymer, and adsorbent or concentrating medium and needle for solid phase microextraction prepared using the copolymer Described is a copolymer of methacrylic acid and ethylene glycol dimethacrylate which does not have any specificity to general organic solvents, can thus adsorb wide variety of the organic solvents, shows almost no desorption-adsorption hysteresis and therefore, is ... | 10/25/2011 |
| 8025843 | Hydrogen sensor The present invention has a hydrogen detection portion composed of a semiconductor and a hydrogen absorber provided at least a part of a surface thereof, and pairs of electrodes provided at the semiconductor so as to sandwich the place at which the hydrogen absorber... | 09/27/2011 |
| 8003056 | Gas analyzer apparatus and method of analyzing gases A gas analyzer apparatus includes a device or platform for supporting a predetermined quantity of a reagent capable of reacting with a predetermined gas to cause a detectable change in a characteristic of the reagent, a reservoir adapted to retain the reagent, a dis... | 08/23/2011 |
| 7981365 | Electrospray coating of aerosols for labeling and identification A device having an air sampler, an electrospray apparatus, and a fluorescence excitation and detection system. The air sampler is capable of moving air suspected of containing a biological or chemical aerosol particle into a chamber. The electrospray apparatus is ca... | 07/19/2011 |
| 7850918 | 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 p... | 12/14/2010 |
| 7824619 | Molecular sensors for explosives The present invention relates to a molecular sensor for detecting the presence of a target analyte comprising a nitro-containing explosive molecule, the sensor comprising: a support substrate; a pair of electrodes comprising (i) a first electrode and (ii) a second e... | 11/02/2010 |
| 7763208 | System and method for sensing and analyzing gases Disclosed herein is a device and method for converting the resistances of an array of metal oxide sensors into digital signals, wherein the sensors respond to the concentration of gases surrounding the sensor array. The device includes an electronic excitation devic... | 07/27/2010 |
| 7744818 | Stationary phase materials for micro gas analyzer Selecting a stationary phase for a fluid analyzer using certain criteria to determine an appropriate material for use in, for instance, a micro fluid analyzer. High absorption of an analyte or sample, low water sorbency and high porosity or permeability of the mater... | 06/29/2010 |
| 7700044 | Chemical vapor sensor A chemical vapor sensor is provided that passively measures a chemical species of interest with high sensitivity and chemical specificity. In an aspect, ethanol vapor in a vehicle cabin is measured, and sufficient sensitivity is provided to passively detect a motor ... | 04/20/2010 |
| 7687030 | Hydrogen gas visualization device A hydrogen gas visualization device comprises a hydrogen sensor having a thin film layer formed on the surface of a substrate and a catalyst layer formed on the surface of the thin film layer which, when contacted by hydrogen gas contained in an atmosphere, hydrogen... | 03/30/2010 |
| 7622080 | Hydrogen gas sensitive semiconductor sensor A hydrogen gas sensitive semiconductor sensor including a catalytic metal layer, a semiconductor layer and an insulator layer arranged between the catalytic metal layer and the semiconductor layer. The catalytic metal layer includes an outer surface and an inner sur... | 11/24/2009 |
| 7578974 | Resistive type oxygen sensor and air/fuel ratio control system using it A resistance-type oxygen sensor which is provided to be used mainly for measuring the oxygen gas partial pressure of automobile exhaust gas, and which has a short output response time in response to changes in oxygen partial pressure, low resistivity of the oxide se... | 08/25/2009 |
| 7556775 | Microelectro-mechanical chemical sensor A microelectro-mechanical chemical sensor includes an active cantilever beam having a chemically selective material layer disposed thereon and at least one, preferably two, resistors with the resistance corresponding to the cantilever beam deflection. The sensor als... | 07/07/2009 |
| 7442340 | Chemical agent monitoring system A method and apparatus for sampling for the chemical warfare agent VX, where it is advantageous for the VX to be converted to its G-analog to facilitate aspirator induced movement of the sample through a sample line, to a sampling tube or to sample detection apparat... | 10/28/2008 |
| 7442555 | Ammonia gas sensor method and device A mixed potential sensor device and methods for measuring total ammonia (NH3) concentration in a gas is provided. The gas is first partitioned into two streams directed into two sensing chambers. Each gas stream is conditioned by a specific catalyst syste... | 10/28/2008 |
| 7422724 | Biological preconcentrator A biological preconcentrator comprises a stimulus-responsive active film on a stimulus-producing microfabricated platform. The active film can comprise a thermally switchable polymer film that can be used to selectively absorb and desorb proteins from a protein mixt... | 09/09/2008 |
| 7419635 | Pd/VOdevice for colorimetric Hdetection A sensor structure for chemochromic optical detection of hydrogen gas over a wide response range, that exhibits stability during repeated coloring/bleaching cycles upon exposure and removal of hydrogen gas, comprising: a glass substrate (20); a vanadium oxide... | 09/02/2008 |
| 7419830 | Plural reaction chamber catalytic testing device and method for its use in catalyst testing A catalytic testing device comprising a reaction block comprising a set of reaction chambers, each chamber comprising a fluid inlet and outlet connected to an outgoing fluid duct connected to analysis means, fluid ... | 09/02/2008 |
| 7416703 | Polymer based lanthanide luminescent sensors for the detection of organophosphorus compounds A device for measuring and detecting the organophosphonis compounds, such as a pesticides or a nerve agents is provided. The devices function by selectively binding an organophosphorous compound to a luminescent functionality-imprinted copolymer. The copolymers poss... | 08/26/2008 |
| 7416702 | Hydrogen sensor and process for production thereof According to the present invention there is disclosed a hydrogen sensor comprising a substrate, a rare earth metal film formed on the substrate, and a protective film formed on the rare earth metal... | 08/26/2008 |
| 7412872 | Process for screening outgas emissions in semiconductor processing The present description relates to a process for measuring outgas emissions in fabrication chambers used for semiconductors, micromachines and the like. In one embodiment, the invention includes inserting a gas adsorption material into a processing chamber exhaust v... | 08/19/2008 |
| 7399449 | Microfabricated diffusion source A microfabricated diffusion source to provide for a controlled diffusion rate of a vapor comprises a porous reservoir formed in a substrate that can be filled with a liquid, a headspace cavity for evaporation of the vapor therein, a diffusion channel to provide a co... | 07/15/2008 |
| 7368289 | Filter for determination of mercury in exhaust gases An apparatus, process, coating, and filter for the accurate measurement of total mercury concentration in flue gas. In a preferred aspect, the concentrations of both elemental and oxidized mercury are preserved by the apparatus for analysis. Accordingly, embodiments... | 05/06/2008 |
| 7367216 | Phased micro analyzer V, VI A micro fluid analyzer having a concentrator and two or more separators. The analyzer may have one, two or more pumps. The analyzer may have a hyper pre-concentrator having a number of channels. There are numerous detectors positioned along the flow path of the anal... | 05/06/2008 |
| 7364700 | Ozone gas sensing element, detection apparatus, and measurement method A sensing element in which a dye that changes in the light absorption characteristic of the visible region upon reaction with ozone gas is deposited in the pores of a porous material is prepared. A change in dye before and after exposing the sensing element to a mea... | 04/29/2008 |
| 7361946 | Semiconductor device-based sensors Semiconductor device-based chemical sensors and methods associated with the same are provided. The sensors include regions that can interact with chemical species being detected. The chemical species may, for example, be a component of a fluid (e.g., gas or liquid).... | 04/22/2008 |
| 7354553 | Method and apparatus for detecting the presence of elemental mercury in a gas sample An improved elemental mercury analyzer utilizes a fluorescence assembly in combination with a fluorescence quenching reduction mechanism to detect the concentration of elemental mercury within an emission gas sample, via fluorescence of the mercury within the gas sa... | 04/08/2008 |
| 7351226 | Medical infusion pump An infusion pump for infusing solutions from IV bags, particularly large one liter bags, through tubing to patients includes housing that has a compartment to receive an IV bag in a solution-dispensing position. The bag rests over a bladder within the compartment, a... | 04/01/2008 |
| 7347974 | Materials, method and apparatus for detection and monitoring of chemical species A method for investigating a target environment to determine whether or in what amount a chemical species may be present therein, which comprises: (a) exposing to said environment an article of manufacture comprising a multiplicity of particles in close-packed orien... | 03/25/2008 |
| 7341694 | Ammonia sensor In an ammonia sensor (1), lead portions (7) and (9) are provided on an insulating substrate (5); a pair of comb-shaped electrodes (11) and (13) are connected to the lead portions (7) and (9), respectively; a se... | 03/11/2008 |
| 7340952 | Capacitive humidity sensor A capacitive humidity sensor includes a printed circuit board having an insulating substrate on which a circuit section is formed, a pair of electrodes formed on a surface of the insulating substrate to be opposite from each other with a space, and a humidity sensit... | 03/11/2008 |
| 7340941 | Dense thin film-based chemical sensors and methods for making and using same Sensors for determining the ambient amount (e.g., concentration) of a chemical (e.g., molecular hydrogen in a gas or vapor) are disclosed. Preferred embodiments of these sensors comprise a dense thin metal (e.g., palladium or a palladium alloy) film disposed on a mi... | 03/11/2008 |
| 7338640 | Thermopile-based gas sensor A method of manufacturing a sensor is provided. The method includes disposing a sacrificial layer on a substrate, disposing a low-thermal-conductivity layer on the sacrificial layer, and disposing a first set of conductive arms and a second set of conductive arms on... | 03/04/2008 |
| 7338638 | Trapping materials for trace detection systems The invention is directed to a trap material use in a chemical trace detection portal for detecting trace amounts of contraband, and more particularly for detecting vapors and particles emitted from drugs and explosive devices. The trap material is made of a metalli... | 03/04/2008 |
| 7335526 | Sensing system A ChemFET Sensing system is Described. ... | 02/26/2008 |
| 7335336 | Sensor array using lateral field excited resonators A sensor for sensing a property of a plurality of analytes includes a substrate having a resonant frequency that varies based on contact with a predetermined property of an analyte. The substrate has an analyte contact surface and a non-analyte contact surface locat... | 02/26/2008 |
| 7332346 | Method of collecting chemically contaminating impurity constituents contained in air The method is intended to detect with high sensitivity and high accuracy chemically contaminating impurities in which there exist chemically contaminating impurity constituents of basic series, acidic series, and organic substance series, in gaseous and particle sta... | 02/19/2008 |
| 7331231 | Apparatus and method for measuring micro mass using oscillation circuit A micro mass measuring apparatus includes a cantilever on which a subject is attached, a piezoelectric element formed on the cantilever, an oscillation circuit for actively vibrating the cantilever and providing a varied resonance frequency by the subject, and a fre... | 02/19/2008 |
| 7329389 | Sensor device and method for qualitative and quantitative analysis of gas phase substances New sensors and methods for qualitative and quantitative analysis of multiple gaseous substances simultaneously with both high selectivity and high sensitivity are provided. The new sensors rely on a characteristic difference in energy between the interaction of a p... | 02/12/2008 |
