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8178047 |
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...
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8114200 |
Multi-dimensional portable gas chromatograph system
A portable multi-dimensional gas chromatograph, the gas chromatograph including a carrier gas container, a regulator fluidly connected to the carrier gas container, a dopant chamber containing a...
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8087283 |
Handheld gas analysis systems for point-of-care medical applications
The disclosure describes an apparatus including a substrate and a gas chromatograph having a fluid inlet and a fluid outlet and being mounted to the substrate. A detector array having a fluid inlet...
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8030100 |
Chemical sensor
The application relates to a chemical sensor device comprising a substrate (1), a sensor medium (3) formed on the substrate, the sensor medium comprising one-dimensional nanoparticles, wherein the...
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8011224 |
Method and device for detecting and identifying chemical agents
A feeding device for enriching and feeding a fluid sample into a chemical detector, the feeding device comprises (a) a sorbent element having a sorbent material for sorbing at least one target...
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7959865 |
Miniaturized gas chromatograph and injector for the same
The invention relates to a miniaturized gas chromatograph and injector for the same. Said micro-GC is compact and simple and economical to construct. Dead volumes are largely avoided in order to...
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7930924 |
System for the online measurement of volatile and semi-volatile compounds and use thereof
A system and method of measuring volatile and semi-volatile reduced organic compound content and volatile and semi-volatile oxidized organic compound content in a sample, using a dual detection...
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7901632 |
Ultrasensitive olfactory system fabrication with doped aerogels
An array of sensor elements is formed by the incorporation of sensing materials into porous structures, creating sensing systems with extremely large surface areas with sensing molecules attached...
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7836750 |
Gas detection system and method
An example of a gas detection system includes a gas chromatograph oven, a gas detector, a sample gas moving device, and a flow detector. An example of a method for detecting gas includes flowing a...
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7833481 |
Fully integrated portable screening system
A fully integrated portable screening system includes a main housing and a contact pad. The contact pad is removably positioned in the main housing and covered by at least one sample sheet. The...
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7735352 |
Multi-dimensional portable gas chromatograph system
A portable multi-dimensional gas chromatograph, the gas chromatograph including a carrier gas container, a regulator fluidly connected to the carrier gas container, a dopant chamber containing a...
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7695681 |
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...
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7685864 |
Modular manifold for integrated fluidics and electronics
An airtight preconcentrator housing and/or a sensor housing for chemical testing, the housing(s) comprising internal dimensions such that a pre-manufactured preconcentrator and/or sensor can be...
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7544233 |
Gas chromatograph with a mass spectrometer situated down therefrom, and method for performing the gas chromatographic/mass spectrometric analysis of a substance mixture
The aim of the invention is to optimize the analysis of substances separated by gas chromatography with a gas chromatograph, comprising a separating device and a mass spectrometer situated down...
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7541587 |
Gas sensor
A gas sensor comprises a cavity for containing a gas, means for generating radiation which is transmitted through the cavity and includes one or more wavelengths which is absorbed in use by a gas...
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7531136 |
Chemical sensor
The application relates to a chemical sensor device comprising a substrate (1), a sensor medium (3) formed on the substrate, the sensor medium comprising one-dimensional nanoparticles, wherein the...
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7509837 |
Method and system for chemical and physical characterization of complex samples
A method and system for rapid determination of a composition, such as crude oils and fractions thereof, and s obtaining the information necessary to assess the yield of commercially valuable fuel...
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7493795 |
Gas detection method and gas detection apparatus
The present invention provides a gas detection method and detection apparatus that provide better sensitivity and faster recovery after response than conventional gas detection methods and...
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7410558 |
Method and apparatus for determining a total concentration of a component in a mixture of components
The invention relates to a method and apparatus for determining a total concentration of a component in a sample, including a reactor for oxidizing or reducing the sample, a chromatographic column...
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7401497 |
Microdischarge detector method and apparatus
A differential microdischarge detector system. The system comprises two microdischarge detectors (MDDs). One of the MDDs is connected to receive sample analytes to be measured, while the other MDD...
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7395175 |
Digital data recording apparatus, sampling data identification method thereof, and program for identifying sampling data
A digital data recording apparatus, which can record the exact acquisition time of data, a sampling data identification method thereof, and a program for identifying sampling data, are provided. A...
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7383718 |
Single stage flow modulator for performing comprehensive chromatography
A single stage flow modulator for performing comprehensive chromatography comprises a first chromatographic column, a valve fluidically coupled to at least two fluid conduits, wherein when in a...
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7377150 |
Analyzer
An analyzer includes a reforming unit which reforms fuel containing an organic compound which contains carbon and hydrogen into a reformed gas containing hydrogen, a flame ionization detector which...
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7347080 |
Thermal conductivity detector
A thermal conductivity detector (TCD) utilizes a modular thermistor assembly that mounts to the TCD body. The thermistor assembly is easily replaceable in the TCD. Within the TCD, a thermistor bead...
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7343779 |
High performance, hand-held gas chromatograph, method and system
A hand-held, ultra-sensitive gas chromatograph which provides real time detection and analysis of chemical compounds or impurities is disclosed. The detection sensitivity ranges from parts per...
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7296458 |
Nickel-coated free-standing silicon carbide structure for sensing fluoro or halogen species in semiconductor processing systems, and processes of making and using same
A (MEMS)-based gas sensor assembly for detecting a fluorine-containing species in a gas containing same, e.g., an effluent of a semiconductor processing tool undergoing etch cleaning with HF, NF3,...
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7237430 |
Method and apparatus for enhanced detection of a specie using a gas chromatograph
The invention includes a method and apparatus for a chromatography system having a chromatographic column for separating gases in a mixture from one another and an electrochemical gas sensor...
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7233034 |
Hydrogen permeable protective coating for a catalytic surface
A protective coating for a surface comprising a layer permeable to hydrogen, said coating being deposited on a catalyst layer; wherein the catalytic activity of the catalyst layer is preserved.
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7211222 |
Gas sensor
A powder filler is stuffed in a filler space defined between a housing and a gas sensing element so as to airtightly seal a clearance between the housing and the gas sensing element. The powder...
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7204125 |
Pressure activated sampling system
Screening of items for the presence of contaminants, such as explosives residue, is accomplished by subjecting an item loaded into a pressure chamber to a pressure substantially in excess of...
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7185527 |
Protecting filaments of a thermal conductivity detector
A process for protecting a filament in a thermal conductivity detector from chemical corrosion includes changing the flow direction of the column effluent in the thermal conductivity detector to...
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7107818 |
Method and device for comprehensive two-dimensional gas chromatography
A method for detecting substances or mixtures of substances within a sample in an apparatus for comprehensive two-dimensional gas-chromatographic analysis according to the present invention,...
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7100421 |
Micro-discharge gas detector
A gas detector especially adapted for use with gas chromatographs contains two capillary tubing electrodes through which a gas flows. The inner ends of the electrodes are coaxial and are separated...
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7061388 |
Chemical, biological, radiological, and nuclear weapon detection system comprising array of spatially-disparate sensors and surveillance equipment
A chemical, biological, radiological, and nuclear weapon detection system is disclosed that comprises an array of spatially-disparate hazardous material sensors and an array of spatially-disparate...
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7052525 |
Vehicle integrated protective system
A protective system having an upstream detection subsystem to detect a contaminant in an airflow and to provide a contaminant signal, an upstream detection subsystem, a filtration subsystem to...
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6952946 |
Method for the gas chromatographic analysis of a sample, and analyzer
In a gas chromatograph, an injected sample for analysis (3) is passed through a separation device (5) to separate components present in the sample; at the end of the separation device, selected...
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6887359 |
Chemical micro-sensor
An integrated optical capillary electrophoresis system for analyzing an analyte. A modulated optical pump beam impinges on an capillary containing the analyte/buffer solution which is separated by...
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6883365 |
Focusing device for volatile and semivolatile organic compounds in the gaseous phase
A focusing device for volatile and semi-volatile organic compounds in the gaseous phase, comprising a support structure, a container for said organic compounds, a cooling element and a heating...
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6849238 |
Measuring sensor for gases
The measuring sensor, particularly a lambda probe, has a ceramic sensor member retained at a high temperature during measuring operation. It is shielded from water droplets, carried along in the...
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6845650 |
Gas chromatograph
A gas chromatograph in which the substances of a substance mixture that is to be analyzed are separated in a separation device and are detected in a detector device. An evaluation device (10)...
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6779379 |
Method and device for vaporization injection
The invention concerns a device for vaporizing injections of samples into a gas chromatography analysis device, comprising a vaporization chamber elongated lengthways and heated, as well as a...
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6763704 |
Foam detector for concentrator attachment for gas chromatograph
A foam detector generally including a pair of leads positioned adjacent to a surface layer of a fluid so that foam created on a surface layer of the fluid contacts at least one lead and sends a...
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6756016 |
Gas sensor
A gas sensor for the detection of gases comprises a housing and an active element disposed within the housing. The active element is surrounded by a porous insulating material having a bulk density...
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6736000 |
Stable glow discharge detector
A highly sensitive electronic ion cell for the measurement of trace elements in He carrier gas which involves glow discharge. A constant wave (CW) stable glow discharge detector which is controlled...
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RE38344 |
Hydrogen sensor using a solid hydrogen ion conducting electrolyte
A reliable gaseous hydrogen detection and measuring device which is simple, easy to use, does not require any reference gas supply, and which can be of reasonably rugged construction. The device...
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6627454 |
Method and system for gas chromatography
The invention provides a gas chromatography method for analyzing materials vaporizable in a gas chromatograph system, the method including filling a sample injection device with a sample of the...
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6598460 |
Explosion-proof apparatus and gas chromatograph for process
An explosion-proof apparatus includes a pressure resistant explosion-proof case, heater, manifold, and analyzer unit. The heater is disposed in the pressure resistant explosion-proof case. The...
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6548024 |
Gas sensors
In a catalytic sensor, a bead is located within a can having an aperture in its front surface. The bead is surrounded by thermally insulating material such as glass fiber and a filter material is...
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6457347 |
Glow discharge detector
A highly sensitive electronic ion cell for the measurement of trace elements in He carrier gas which involves glow discharge. A constant wave (CW) glow discharge detector which is controlled...
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6386014 |
Energy measurement device for flowing gas using microminiature gas chromatograph
A system for determining the energy and volume delivered by a flowing natural gas carried within a pipeline based on BTU content analysis of the natural gas using a micro-miniature gas...
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