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| Number | Title | Issue Date |
| 8181504 | Smoke evaluating device and related method A smoke evaluation device includes a manifold in fluid communication with a source of smoke, and a first sampling line and a second sampling line in fluid communication with the manifold. The first sampling line and the second sampling line are arranged to convey pa... | 05/22/2012 |
| 8171772 | Gas analyzer An improved gas analyzer for analyzing the concentrations and amounts of one or more different gases in drilling mud returning from a borehole is disclosed. An oil well drilling rig re-circulates the drilling mud by continuously pumping it through a gas separation m... | 05/08/2012 |
| 8117896 | Preconcentrators and methods of making and using the same Apparatus, systems and methods are described for preconcentrators, chemical sensing systems and gas chromatographs. A preconcentrator is described that comprises a hollow enclosure containing a sorbent material. The enclosure may be a capillary tube that can be form... | 02/21/2012 |
| 8042379 | Method of analyzing organic chemical substances and apparatus for analysis A combination of a liquid chromatograph and a gas chromatograph was a possible measure for improving precision in analyzing organic chemical substances. However, because elutes from liquid chromatoghaphies contain water and a highly polar solvent, injection thereof ... | 10/25/2011 |
| 8006540 | Automatic solid-phase microextraction sampling apparatus An automatic solid-phase microextraction (SPME) sampling apparatus having a mobile sampler arm with a holder for a probe carrying a fiber 9 and an intermediate bracket for transferring the probe between a probe storage tray and the gas chromatograph injector.... | 08/30/2011 |
| 7992424 | Analytical instrumentation and sample analysis methods Sample introduction components of analytical instruments are provided that can include a membrane inlet component in fluid communication with both a mass analyzer component and a sample inlet. The components can also include a valve in fluid communication with the s... | 08/09/2011 |
| 7984638 | Gas chromatograph oven A gas chromatograph oven including a housing, a capillary tube and a thermal control assembly. The housing defining a capillary tube receiving space and having at least one outlet port to permit the passage of a fluid from the capillary tube receiving space of the h... | 07/26/2011 |
| 7958770 | Heated transfer line for use in high temperature microwave chromatography A heat transfer line assembly is disclosed for microwave heated chromatography instruments. Analytical instruments incorporating a microwave oven including the heated transfer lines are also disclosed as well as methods for making and using same. ... | 06/14/2011 |
| 7827850 | Gas-liquid two-phase flow chromatographic analyzer and method of analysis using the same analyzer This invention provides a chromatographic apparatus comprising an introduction part for a carrier gas as a main mobile phase medium, a sample injection part, a separation column comprising a stationary phase formed by coating a polymeric material, a part for housing... | 11/09/2010 |
| 7818994 | Method and apparatus for injecting samples in gas chromatography The present invention relates to a method for injecting a sample (i.e. a material to be analyzed that may be dissolved in a solvent) in a vaporization chamber or in a pre-column or a gas chromatograper, this method implying separately injecting a co-solvent, with th... | 10/26/2010 |
| 7677081 | Method for analyzing gas components, apparatus for separating gas components and method for identifying the same The present invention provides a method for analyzing gas components, an apparatus for separating the gas components, and a method for identifying the gas components that can provide more accurate information in distribution and consumption by classifying and identi... | 03/16/2010 |
| 7661295 | Method for coupling a gas chromatography device to an NMR spectrometer and associated apparatus A method for coupling a gas chromatograph (21) to an NMR spectrometer, wherein the carrier gas present at the outlet of a separating column (23) of the gas chromatograph (21) including a sample contained in the carrier gas is supplied via a heat... | 02/16/2010 |
| 7634936 | Method and system for sampling dissolved gas A gas sampling system having a storage chamber configured to store a gas; a water-impermeable, gas-permeable surface; and an isolating system. The isolating system is configured to have a first and a second position, and the storage chamber is in fluid communication... | 12/22/2009 |
| 7621171 | Method and apparatus for sample analysis Methods and systems for analyzing samples, such as gas samples, are described. One method comprises providing a gas sample, increasing pressure applied to the gas sample to compress the sample to a smaller volume and provide a pneumatically focused gas sample, and a... | 11/24/2009 |
| 7603888 | Automatic sampler associable with chromatographic analysis instruments This invention concerns an automatic sampler (AS) associable with two or more chromatographic analysis instruments (GC1, GC2, GCn), such as gas chromatographs for example, which can be interfaced with two or more separate data systems (DS1, DS | 10/20/2009 |
| 7552617 | Automated system for detection of chemical compounds An automated system for processing a liquid test sample is provided. The disclosed automated system comprises a gas and liquid separator; an attachment for a first gas source that provides a flow of gas for transferring the test sample from a sealable sample contain... | 06/30/2009 |
| 7530258 | Method for the preparation of samples for an analyzer and sample preparation station therefor A method is provided for the preparation of samples for an analyzer, and a sample preparation station therefor, which allows injection of even relatively large liquid volumes through a packing in an automated manner in order to enrich the packing of the substances o... | 05/12/2009 |
| 7523642 | Method and device for determining the fractions of lubricants emitted into the atmosphere in coolant processes A method for determining fractions of coolants emitted into the atmosphere in processes using coolants, in particular in the metal processing industry. Here, samples of the atmosphere polluted with fractions of coolants in droplet and vapor form are fed to an evapor... | 04/28/2009 |
| 7490506 | Multidimensional gas chromatography apparatus and analyte transfer procedure using a multiple-cool strand interface The invention provides a MDGC apparatus that includes a cryotrapping apparatus capable of cooling at least twice a portion of a chemical sample and provided with a detector device disposed upstream of the cryotrap and allowing identification of the portion of the ch... | 02/17/2009 |
| 7467540 | Analysis systems and methods A method of analyzing a composition including live crude includes separating the composition into a vapor phase and a liquid phase. A composition of the vapor phase is determined with a gas chromatograph. At least a portion of the liquid phase is deposited in a vess... | 12/23/2008 |
| 7425307 | Enhanced subsurface scanning system, method and computer program product An enhanced scanning solutions module is disclosed including a flow control subsystem; a detector subsystem coupled to the flow control subsystem; a dryer/moisture separator subsystem coupled to the flow control subsystem; a sampling subsystem coupled to the flow co... | 09/16/2008 |
| 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 is connected to receive a reference sample that contains interfering ... | 07/22/2008 |
| 7398703 | Process for the estimation of volatile substances in a sample A process for the estimation of volatile substances which comprises the steps of: (i) heating distilled water in a flask to a first temperature, (ii) adding the sample to be tested into said heated water, (iii) closing the flask, (iv) maintaining the flask containin... | 07/15/2008 |
| 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 first position, the valve directs a control flow to direct an output of ... | 06/10/2008 |
| 7384457 | Seal for gas chromatography A seal forming a fluid tight connection between a gas chromatography column and a sample inlet assembly is disclosed. The seal is formed by a metal injection molding process. The seal has a first surface adapted for sealing with the sample inlet assembly and a secon... | 06/10/2008 |
| 7381372 | Sample suction apparatus A sample suction apparatus includes: first through third members; a drive source; and a suction needle provided on the third member. The drive source reduces a distance between the first member and the third member to perform: a first action of shifting the first me... | 06/03/2008 |
| 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 is connected to the reforming unit, and detects an ion generated by ... | 05/27/2008 |
| 7374722 | System for taking a gas sample able to contain particles of suspended materials The sampling system of the invention includes a column comprising a first separator associated with a first collector so as to extract particles whose diameter is larger than a first diameter, and a second separator associated with a second collector which eliminate... | 05/20/2008 |
| 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 |
| 7363801 | Gas chromatograph sample injector In a sample injector for a gas chromatograph, the present invention improves the throughput of a GC analysis including the derivation of a target compound and reduces the tedious work of handling a reagent for the derivation. According to the present invention, a de... | 04/29/2008 |
| 7360394 | Multi-purpose modular pyrolysis and thermal processing system for chemical and biological threat agent detection A multi-purpose modular pyrolysis and thermal processing system (MPMPTPS) for pyrolyzing and/or vaporizing liquids and solids to create an evolved vapor suitable for introduction into a gas-chromatography and/or vapor detection system, thereby allowing detection, cl... | 04/22/2008 |
| 7361206 | Apparatus and method for water vapor removal in an ion mobility spectrometer The present invention is directed to an apparatus and a method for continuously removing water vapor from a closed loop, re-circulated gas flow in an ion mobility spectrometer using a water permeable membrane, having a first side and a second side opposite the first... | 04/22/2008 |
| 7353689 | Liquid separator for a gas analyzer and method for separating a liquid component from gas Liquid separator for a gas analyzer and method for separating a liquid component from gas. The liquid separator comprises an input passage having an input end and an output end, an output passage having an input end and an output end, a wall formed of a gas permeabl... | 04/08/2008 |
| 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 trillion to parts per million with an average retention time ranging from... | 03/18/2008 |
| 7337686 | Multi-threat detection system A method and system for efficiently screening for dangerous threatening items are presented. The system includes an object unit designed to hold the object and a test unit including equipment for subjecting the object to a combination of two or more tests. There are... | 03/04/2008 |
| 7332275 | Methods for detecting methylated nucleotides A method for detecting methylated nucleotides within a nucleic acid sample is provided. The method includes the steps of splitting a nucleic acid sample into separate reaction vessels; contacting nucleic acid in one reaction vessel with bisulfite; amplifying the nuc... | 02/19/2008 |
| 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 |
| 7311757 | Analyte pre-concentrator for gas chromatography An analyte pre-concentrator for gas chromatography is disclosed generally comprising a tube having a restricted outlet and packed with an adsorbent, wherein the tube serves as the liner of a chromatographic injector, as an adsorbent trap coupled to a chromatographic... | 12/25/2007 |
| 7305866 | Mass spectrometry A method of gas chromatograph mass spectrometry with a negative chemical ionization (NCI) process includes analyzing a standard substance for the NCI by deriving with a derivatization reagent a fatty acid with a multiple number of carbon atoms, measuring the standar... | 12/11/2007 |
| 7306649 | 3D miniature preconcentrator and inlet sample heater The present invention relates to a three dimensional preconcentrator and inlet heater. The preconcentrator consists of a substrate with passageways, a conductive material coated to the top and the bottom of the substrate and an adsorbent coating covering the entire ... | 12/11/2007 |
