James A Genovese, Charles S Harden, A Peter Snyder: Automated, on-demand ion mobility spectrometry analysis of gas chromatograph effluents. The United States of America represented by the Secretary of the Army, Edward L Stolarun, Ulysses John Biffoni, September 22, 1998: US05811059 (49 worldwide citation)

A chemical sampling apparatus including an interface between a miniature mobility spectrometer and a gas chromatography system. The apparatus has a gas chromatography an ion mobility spectrometer and an input for inputting a regulated flow of a gas to be analyzed to the gas chromatograph. An interfa ...

John H Jerman, Stephen C Terry: Gas chromatography system and detector and method. Board of Regents of Stanford University, Flehr Hohbach Test Albritton & Herbert, September 18, 1984: US04471647 (47 worldwide citation)

There is described a gas chromatographic assembly formed on a semiconductor wafer by etching techniques. There is also described an improved thermal detector for use therewith.

David P Rounbehler, Eugene K Achter, David H Fine, George B Jarvis, Stephen J MacDonald, David B Wheeler, Clayton D Wood: High speed gas chromatography. Thermedics Detection, Fish & Richardson P C, September 15, 1998: US05808178 (46 worldwide citation)

A high speed gas chromatography system includes a heated isothermal region and a gas chromatography column located externally to the isothermal region. The system also includes a detector and a flow path between the column and the detector. At least a portion of the flow path is positioned in the is ...

Stephen C Terry, John H Jerman: Miniature gas chromatograph apparatus. Microsensor Technology, Limbach Limbach & Sutton, October 2, 1984: US04474889 (46 worldwide citation)

A gas chromatography assembly has a substrate wafer with grooves and a valve seat etched therein. A plate cooperates with the wafer and the grooves to define gas channels: a carrier gas channel and a sample gas channel, each passing through the valve seat. A valve actuator is attached to the valve s ...

Wolfgang Chlosta, Peter Pospisil: Sampler for feeding samples in gas chromatography. Bodenseewerk Perkin Elmer & Co, F L Masselle, E T Grimes, R A Hays, October 16, 1984: US04476733 (45 worldwide citation)

A plurality of samples subject to the same thermostatting time periods are directed one by one to the inlet section of a gas chromatograph for analysis in accordance with the head space method. To this end, a first heatable sample store adapted to be stepwise advanced is provided, in which thermosta ...

Walter R Fehr, Earl G Hammond: Soybeans having low linolenic acid and low palmitic acid contents. Iowa State University Research Foundation, Burns Doane Swecker & Mathis L, February 3, 1998: US05714670 (43 worldwide citation)

A novel soybean seed and plant designated AX7777-7-30 having ATCC Accession No. 97616 and its descendents are provided. Such soybean seed contains an endogenous linolenic acid (C18:3) content in the vegetable oil at a low level of less than about 3 percent by weight (preferably less than about 2.5 p ...

R Ray Fall, Jennifer Kuzma, Michele Nemecek Marshall: Materials and methods for the bacterial production of isoprene. The Regents of the University of Colorado, Saliwanchik Lloyd & Saliwanchik, December 15, 1998: US05849970 (43 worldwide citation)

A process for the bacterial production of the hydrocarbon isoprene (2-methyl-1,3-butadiene) is described and claimed. Various bacterial species, both Gram-negative and Gram-positive, were found to produce isoprene, and a method to isolate isoprene-producing bacteria from natural sources is described ...

Robert E Uber, Viktor Kouznetsov, Alexander Tarassov, Byron L Carnahan, Charles W Pipich: Recirculating filtration system for use with a transportable ion mobility spectrometer in gas chromatography applications. Mine Safety Appliances Company, Titus & McConomy, April 7, 1998: US05736739 (41 worldwide citation)

Generally, the present invention provides a recirculating filtration system for use with a transportable ion mobility spectrometer in gas chromatography applications. The transportable recirculating filtration system comprises a pump and a set of filters and flow sensors connected to an ion mobility ...

Andrew Tipler, Gary Campbell, Mark Collins: Analyte pre-concentrator for gas chromatography. Perkin Elmer Instruments, St Onge Steward Johnston & Reens, November 25, 2003: US06652625 (41 worldwide citation)

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 column, and/or as an adsorbent tr ...

Senya Inoue, Akira Ono, Mikio Kobayashi, Hiroshi Yokoo: Porous cordierite ceramics, a process for producing same and use of the porous cordierite ceramics. Kanto Kagaku Kabushiki Kaisha, Birch Stewart Kolasch & Birch, October 6, 1987: US04698317 (40 worldwide citation)

New type porous cordierite ceramics having a new characteristic interconnecting open cellular structure and a hollow microspherical cordierite glass powder with a shell devoid of any pores or provided with a few or an abundance of open pores which is used as a starting material for the porous cordie ...