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Class Information
Number: 95/86
Name: Gas separation: processes > Chromatography > Plural separate columns
Description: Process in which the plurality of gases passes through two or more parallel or serial columns.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7601543 |
Method of modulating a second carrier for partial modulation via pulsed flow modulator for comprehensive two-dimensional liquid or gas chromatography |
Oct. 13, 2009 |
| 7527676 |
Unit for separating gas |
May. 5, 2009 |
| 7524363 |
Gas chromatograph column assembly |
Apr. 28, 2009 |
| 7507586 |
Partial modulation via pulsed flow modulator for comprehensive two-dimensional liquid or gas chromatography with multiple modulation periods |
Mar. 24, 2009 |
| 7507273 |
Chromatographic rectification of ethanol |
Mar. 24, 2009 |
| 7383718 |
Single stage flow modulator for performing comprehensive chromatography |
Jun. 10, 2008 |
| 7273517 |
Non-planar microfabricated gas chromatography column |
Sep. 25, 2007 |
| 7260978 |
Gas chromatography/mass spectrometry system |
Aug. 28, 2007 |
| 7107818 |
Method and device for comprehensive two-dimensional gas chromatography |
Sep. 19, 2006 |
| 7091044 |
Partial modulation via pulsed flow modulator for comprehensive two-dimensional liquid or gas chromatography |
Aug. 15, 2006 |
| 6840456 |
Injection valves |
Jan. 11, 2005 |
| 6838288 |
Modulator for gas chromatography |
Jan. 4, 2005 |
| 6706534 |
Pulsed carrier gas flow modulation for selectivity enhancements with gas chroma tography using series-coupled ensembles |
Mar. 16, 2004 |
| 6706535 |
Pulsed carrier gas flow modulation for selectivity enhancements with gas chromatography using series-coupled column ensembles |
Mar. 16, 2004 |
| 6702989 |
Pulsed carrier gas flow modulation for selectivity enhancements with gas chromatography using series-coupled column ensembles |
Mar. 9, 2004 |
| 6702874 |
Gas separation apparatus and gas separation method |
Mar. 9, 2004 |
| 6632268 |
Method and apparatus for comprehensive two-dimensional gas chromatography |
Oct. 14, 2003 |
| 6497138 |
Multilayered gas chromatograph |
Dec. 24, 2002 |
| 6484560 |
In Situ concentration of an analyte |
Nov. 26, 2002 |
| 6447575 |
Method and apparatus for gas chromatography analysis of samples |
Sep. 10, 2002 |
| 6311544 |
Selective removal of volatile substances injected into a chromatographic packing filled column |
Nov. 6, 2001 |
| 6237396 |
Integrated analysis process and device for hydrocarbon characterization by distillation simulation |
May. 29, 2001 |
| 6007602 |
Apparatus and method for chemical modulation |
Dec. 28, 1999 |
| 5904749 |
Gas chromatographic method |
May. 18, 1999 |
| 5846292 |
Chromatograph with column extraction |
Dec. 8, 1998 |
| 5840953 |
Purified tetraethoxysilane and method of purifying |
Nov. 24, 1998 |
| 5779765 |
Process and device for the injection of large volumes of liquid samples in a gaschromatograph |
Jul. 14, 1998 |
| 5611846 |
Portable gas chromatograph |
Mar. 18, 1997 |
| 5578111 |
Process and a device for continuous chromatography |
Nov. 26, 1996 |
| 5547497 |
Apparatus for gas chromatography |
Aug. 20, 1996 |
| 5492555 |
Automated two-dimensional interface for capillary gas chromatography |
Feb. 20, 1996 |
| 5376277 |
Multidimensional chromatographic system |
Dec. 27, 1994 |
| 5322627 |
High efficiency packed column supercritical fluid chromatography |
Jun. 21, 1994 |
| 5322626 |
Decoupled flow and pressure setpoints in an extraction instrument using compressible fluids |
Jun. 21, 1994 |
| 5281256 |
Gas chromatography system with column bifurcation and tunable selectivity |
Jan. 25, 1994 |
| 5196039 |
Apparatus and method of multi-dimensional chemical separation |
Mar. 23, 1993 |
| 5152176 |
Process and apparatus for determining the quality of impurities in a gas by chromatography in gas phase and utilization for measuring the quantity of doping impurities in silane |
Oct. 6, 1992 |
| 5108468 |
Switching system for a multidimensional gas chromatograph |
Apr. 28, 1992 |
| 5092155 |
High speed detection of vapors of specific compounds |
Mar. 3, 1992 |
| 4883504 |
Gas chromatograph |
Nov. 28, 1989 |
| 4728344 |
Polymer analysis |
Mar. 1, 1988 |
| 4498991 |
Serial flow continuous separation process |
Feb. 12, 1985 |
| 4478720 |
Fractionation process for mixtures by elution chromatography with liquid in supercritical state and installation for its operation |
Oct. 23, 1984 |
| 4478721 |
High efficiency continuous separation process |
Oct. 23, 1984 |
| 4402832 |
High efficiency continuous separation process |
Sep. 6, 1983 |
| 4274967 |
Chromatographic apparatus and method |
Jun. 23, 1981 |
| 4204952 |
Chromatographic apparatus and method |
May. 27, 1980 |
| 4154583 |
Automated temperature programmed preparative chromatography |
May. 15, 1979 |
| 4001112 |
Method of operating a chromatographic apparatus |
Jan. 4, 1977 |
| 3992175 |
Method of and device for chromatographic separation of fluid mixtures into fractions |
Nov. 16, 1976 |
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