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Class Information
Number: 96/102
Name: Gas separation: apparatus > Chromatography type apparatus > With control means responsive to sensed condition
Description: Apparatus in which means are provided to detect an apparatus or process characteristic or a change therein and to control or regulate operation of the apparatus or process based upon the detected characteristic or change therein.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7604004 |
Personal oxygen concentrator |
Oct. 20, 2009 |
| 7544233 |
Gas chromatograph with a mass spectrometer situated down therefrom, and method for performing the gas chromatographic/mass spectrometric analysis of a substance mixture |
Jun. 9, 2009 |
| 7534286 |
Methods and systems for cooling a chromatographic column |
May. 19, 2009 |
| 7520920 |
Guard columns for gas chromatographs and gas chromatograph-mass spectrometers |
Apr. 21, 2009 |
| 7468095 |
System for controlling flow into chromatographic column using transfer line impedance |
Dec. 23, 2008 |
| 7422625 |
Methods and systems for characterizing a sorbent tube |
Sep. 9, 2008 |
| 7396386 |
Method and apparatus for keeping constant the retention times in a gaschromatographic analysis |
Jul. 8, 2008 |
| 7343779 |
High performance, hand-held gas chromatograph, method and system |
Mar. 18, 2008 |
| 7303610 |
Chromatography column assembly |
Dec. 4, 2007 |
| 7267709 |
Methods and systems for characterizing a sorbent tube |
Sep. 11, 2007 |
| 7267796 |
Preparative liquid chromatograph using plural detectors |
Sep. 11, 2007 |
| 7258132 |
Electronically controlled back pressure regulator |
Aug. 21, 2007 |
| 7247189 |
Device for combining two fluid streams |
Jul. 24, 2007 |
| 7168298 |
Mass-sensitive chemical preconcentrator |
Jan. 30, 2007 |
| 7147695 |
Microfabricated microconcentrator for sensors and gas chromatography |
Dec. 12, 2006 |
| 7135056 |
Method and system for sub-ambient pressure control for column head pressure in gas chromatography systems |
Nov. 14, 2006 |
| 7121276 |
Personal oxygen concentrator |
Oct. 17, 2006 |
| 6929678 |
Purge and trap concentrator with improved drying |
Aug. 16, 2005 |
| 6894784 |
Foam detector and disruptor |
May. 17, 2005 |
| 6838288 |
Modulator for gas chromatography |
Jan. 4, 2005 |
| 6719826 |
Method and apparatus for sample injecting in gas chromatography |
Apr. 13, 2004 |
| 6706535 |
Pulsed carrier gas flow modulation for selectivity enhancements with gas chromatography using series-coupled column ensembles |
Mar. 16, 2004 |
| 6706091 |
Sub-to super-ambient temperature programmable microfabricated gas chromatography column |
Mar. 16, 2004 |
| 6706534 |
Pulsed carrier gas flow modulation for selectivity enhancements with gas chroma tography using series-coupled ensembles |
Mar. 16, 2004 |
| 6701774 |
Parallel gas chromatograph with microdetector array |
Mar. 9, 2004 |
| 6702989 |
Pulsed carrier gas flow modulation for selectivity enhancements with gas chromatography using series-coupled column ensembles |
Mar. 9, 2004 |
| 6666907 |
Temperature programmable microfabricated gas chromatography column |
Dec. 23, 2003 |
| 6649129 |
Method and apparatus for concentrating a VOC sample |
Nov. 18, 2003 |
| 6579345 |
Chromatography apparatus with direct heating of the capillary column |
Jun. 17, 2003 |
| 6550961 |
Thermal conductivity detector |
Apr. 22, 2003 |
| 6527835 |
Chemical preconcentrator with integral thermal flow sensor |
Mar. 4, 2003 |
| 6514316 |
System for improving the maximum operating temperature and lifetime of chromatographic columns |
Feb. 4, 2003 |
| 6485543 |
Gas chromatography oven heaters |
Nov. 26, 2002 |
| 6474136 |
Method and apparatus for analyzing impurities in gases |
Nov. 5, 2002 |
| 6447581 |
Gas flow switching device |
Sep. 10, 2002 |
| 6306200 |
Hand-held multiple system gas chromatograph |
Oct. 23, 2001 |
| 6248158 |
Oven housing module in an analytical instrument |
Jun. 19, 2001 |
| 6223584 |
System and method for vapor constituents analysis |
May. 1, 2001 |
| 6074461 |
Chromatograph having a gas recycling system |
Jun. 13, 2000 |
| 6063166 |
Chromatograph having a gas storage system |
May. 16, 2000 |
| 6036747 |
Column specific parameters for retention time locking in chromatography |
Mar. 14, 2000 |
| 6007602 |
Apparatus and method for chemical modulation |
Dec. 28, 1999 |
| 5954860 |
Inductively heated cold-trap analyte injector |
Sep. 21, 1999 |
| 5952556 |
Gas chromatograph with carrier gas control system |
Sep. 14, 1999 |
| 5938817 |
Gas chromatograph |
Aug. 17, 1999 |
| 5933357 |
Backflushing system for gas chromatography |
Aug. 3, 1999 |
| 5922106 |
Automated gas chromatography |
Jul. 13, 1999 |
| 5846292 |
Chromatograph with column extraction |
Dec. 8, 1998 |
| 5830353 |
Oven safety feature |
Nov. 3, 1998 |
| 5811059 |
Automated, on-demand ion mobility spectrometry analysis of gas chromatograph effluents |
Sep. 22, 1998 |
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