| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 422088000 | Including means for adsorbing or absorbing gas into or onto liquid or solid media | 30 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 20130189160 | PRESSURE SENSOR - One or more reactive gases are introduced to a capacitance manometer at a particular area or areas between the inner and outer capacitive electrodes so the error-inducing measurement effects of positive and negative bending is neutralized or minimized. Additionally, a guard structure may be used for the electrode structure of the capacitance manometer. The guard structure presents an area that is relatively insensitive to the diffusion of the gas into the diaphragm and the resulting changing surface tension, curvature and deflection, thus providing increased or optimal stability of the zero reading and pressure reading of the manometer. The guard may also provide electrostatic isolation of the electrodes. | 07-25-2013 |
| 20130209315 | SPECIFIED GAS CONCENTRATION SENSOR - A specified gas concentration sensor includes a thin film thermally separated from a substrate, which is provided by a heater, a temperature sensor and an absorbing substance of a specified gas, and temperature change accompanied by heat generation while absorbing the specified gas in an ambient gas being capable of measuring by the temperature sensor. The absorbed specified gas is released from the absorbing substance by heating with the heater, and after stopping heating with the heater, the specified gas concentration in the ambient gas is obtained by utilizing an output of the temperature sensor at a time passing a predetermined time which is a thermal time constant of the thin film or longer at which the specified gas is absent from the heater. An optional heat conductive type sensor having no absorbing substance of the specified gas can broaden the measurable range of the specified gas concentration. | 08-15-2013 |
| 20140023557 | ELECTRONIC NOSE DEVICE - An electronic nose device is disclosed in an embodiment of the invention. The electronic nose device includes a fan module, a gas molecule sensor module, a control unit and an output unit. The fan module is used to pump air actively to the gas molecule sensor module. The gas molecule sensor module detects the air pumped into by the fan module. The gas molecule sensor module at least includes a gas molecule sensor which is covered with a compound. The compound is used to combine preset gas molecules. The control unit controls the fan module to suck air into the electronic nose device. Then the fan module transmits an air current to the gas molecule sensor module to generate a detected data. The output unit calculates the detected data to generate a calculation result and outputs an indicating signal to an operator or compatible host computer according to the calculation result. | 01-23-2014 |
| 20140294676 | HYDROGEN SENSOR WITH ACTIVE LAYER AND METHOD OF MANUFACTURING HYDROGEN SENSORS - Hydrogen sensor including a substrate (S) on which there is deposited an active layer of material comprising a first element selected from the rare earth family, a second element selected from the platinum group metals (PGMs) and a third element selected from the alkaline earth metal family. | 10-02-2014 |
| 422089000 | Gas chromatography | 7 |
| 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 |
| 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 |
| 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 |
| 20130259750 | ION CHROMATOGRAPHY SYSTEMS WITH FLOW-DELAY ELUENT RECYCLE - A chromatographic method including chromatographically separating sample ionic species in an eluent stream, detecting the separated sample ionic species, catalytically combining hydrogen and oxygen gases or catalytically decomposing hydrogen peroxide in a catalytic gas elimination chamber, and recycling the effluent stream from the chamber to the chromatography separation column. The residence time between the detector and the chamber is at least about one minute. Also, flowing the recycle sequentially through two detector effluent flow channels of an electrolytic membrane suppressor. Also, applying heat or UV energy between the detector and the chamber. Also, detecting bubbles after the chamber. Also, a Platinum group metal catalyst and ion exchange medium in the chamber. Apparatus for performing the methods. | 10-03-2013 |
| 20140017130 | THIN LAYER HIGH EXPLOSIVE FLUORESCENT POLYMER SENSING METHODS, SENSORS AND KITS - A sensor for high explosives, comprising a thin layer of fluorescent polymer covalently linked to a silica support with an oxide surface. The support preferably is a silica support, and in a preferred embodiment is a silica chromatographic support. In preferred embodiments, the fluorescent polymer is one or a few monolayers. A preferred embodiment sensor for high explosives is fluorescent polymer within or upon a porous nanostructure. In preferred embodiments the nanostructure is a porous silica nanoparticle. Embodiments of the invention provide methods, sensors, sensor kits, and sensor fabrication processes that enable detecting traces of high explosives by fluorescence quenching in combination with a chromatographic separation. A method for forming a sensor for high explosives includes preparing a fluorescent polymer, capping the reactive polymer with a reactive capping group that covalently reacts with hydroxide groups, and reacting the reactive capping group with surface hydroxides of an oxide support. | 01-16-2014 |
| 20160139028 | TRACKING OF THE RATE OF CORROSION OF A METAL CONDUIT TRAVERSED BY A CORROSIVE FLUID - A method of tracking the rate of corrosion of a metal conduit traversed by a corrosive fluid, in which is provided a device arranged so as to form, when said device is installed on a wall of the metal conduit, a chamber able to receive gaseous hydrogen issuing by permeation across said wall of said conduit, the method comprising: (i) a step of treatment to eliminate a metallic species from the chamber, (ii) a step of measuring a quantity of hydrogen received in the chamber, with a view to estimating the rate of corrosion of the metal conduit. | 05-19-2016 |
| 422090000 | With conductiometric detector | 7 |
| 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 |
| 20130336842 | MOISTURE SENSOR INCLUDING, AS A MOISTURE-ABSORBING LAYER, A POLYMER LAYER INCLUDING A MIXTURE OF POLYAMIDES - The invention relates to a humidity sensor including, as a humidity absorbent layer, a polymer layer including a blend including a first polyamide and a second polyamide, where the said second polyamide includes, in its repetitive units, a number of carbon atoms greater than that of the repetitive units of the first polyamide. | 12-19-2013 |
| 20140105790 | Chemoresistor Type Gas Sensor having a Multi-Storey Architecture - A multi-storey gas sensor is constructed by stacking chemoresistor type gas sensing elements and providing holes through each sensing element so gas can pass from one sensing element to the next, through the sensing layers. A rich data set can be obtained by selecting appropriate combinations of materials for the different sensing layers and varying the operating conditions of the different gas-sensing elements by: taking measurements when different combinations of sensing layers are activated, when given sensing layers are heated to different temperatures or according to different heating profiles, and/or when selected sensing layers are exposed to UV light. Sensor sensitivity and selectivity can be increased by applying UV pulses of controlled duration, and target gas species can be detected based on the transient response of the sensing layer at onset of UV irradiation. Each sensing element may have a micro-hotplate architecture. | 04-17-2014 |
| 20150118111 | Metal Oxide Semiconductor Sensor and Method of Forming a Metal Oxide Semiconductor Sensor Using Atomic Layer Deposition - A semiconductor sensor device includes a substrate, a non-suitable seed layer located above the substrate, at least one electrode located above the non-suitable seed layer, and a porous sensing layer supported directly by the non-suitable seed layer and in electrical communication with the at least one electrode, the porous sensing layer defining a plurality of grain boundaries formed by spaced-apart nucleation on the non-suitable seed layer using atomic layer deposition. | 04-30-2015 |
| 20160084788 | Molecularly Imprinted Polymer Sensors and Methods For Manufacturing The Same - A molecularly imprinted polymer sensor for sensing a target molecule includes (a) a polymer film that is molecularly imprinted with the target molecule and includes a conductive polymer having resistance sensitive to binding with the target molecule and a structural polymer providing porosity to the polymer film, and (b) interdigitated electrodes, located on a surface of the polymer film, for measuring a change in the resistance to sense said binding. | 03-24-2016 |
| 20160099701 | NANO- AND MICRO-ELECTROMECHANICAL RESONATORS - A resonator includes a piezoelectric plate and interdigitated electrode(s). The interdigitated electrode includes a plurality of conductive strips disposed over a top surface of the piezoelectric plate. A two-dimensional mode of mechanical vibration is excited in a cross sectional plane of the piezoelectric plate in response to an alternating voltage applied through the interdigitated electrode. The two-dimensional mode of mechanical vibration is a cross-sectional Lamé mode resonance (CLMR) or a degenerate cross-sectional Lamé mode resonance (dCLMR). | 04-07-2016 |
| 20160123947 | Ammonia Nanosensors, and Environmental Control System - Embodiments of nanoelectronic sensors are described, including sensors for detecting analytes such ammonia. An environmental control system employing nanoelectronic sensors is described. A personnel safety system configured as a disposable badge employing nanoelectronic sensors is described. A method of dynamic sampling and exposure of a sensor providing a number of operational advantages is described. | 05-05-2016 |
| 422091000 | With photometric detector | 3 |
| 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 |
| 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 |
| 20130177480 | PHOTOLUMINESCENT ANALYTE PARTIAL VOLUME PROBE SET - A self-contained, remotely interrogatable, autonomously positionable, pressure probe ( | 07-11-2013 |
