| 12416609 |
Methods and systems for carrier gas identification in gas chromatography |
— |
2025-09-16 |
| 11009489 |
Method and system for reducing the effects of column bleed carryover |
Paul C. Dryden, Sammye Elizabeth Traudt |
2021-05-18 |
| 9804609 |
Mass flow controllers and methods for auto-zeroing flow sensor without shutting off a mass flow controller |
Xiao-Sheng Guan |
2017-10-31 |
| 9429499 |
Methods, devices, and systems for controlling the rate of gas depressurization within a vial containing a gas sample |
Jared M. Bushey, William H. Wilson |
2016-08-30 |
| 8887586 |
Head space sampling device and method for detecting leaks in same |
— |
2014-11-18 |
| 7258132 |
Electronically controlled back pressure regulator |
Bruce D. Quimby |
2007-08-21 |
| 7135056 |
Method and system for sub-ambient pressure control for column head pressure in gas chromatography systems |
— |
2006-11-14 |
| 7128089 |
Flow control providing stable fluid flow |
H. Bryan Bente |
2006-10-31 |
| 5830353 |
Oven safety feature |
— |
1998-11-03 |
| 5686657 |
Planar manifold assembly |
Stephen R. Craig, Paul B. Welsh |
1997-11-11 |
| 5656170 |
Oven safety feature |
— |
1997-08-12 |
| 5642271 |
Pneumatic control system |
— |
1997-06-24 |
| 5567227 |
Method for improving the range of stable control of the pneumatic system of a gas chromatograph |
— |
1996-10-22 |
| 5567868 |
Planar manifold assembly |
Stephen R. Craig, Paul B. Welsh |
1996-10-22 |
| 5542286 |
Method and apparatus for correcting flow and pressure sensor drift in a gas chromatograph |
Tak Kui Wang |
1996-08-06 |
| 5476000 |
Retention time stability in a gas chromatographic apparatus |
Edwin E. Wikfors |
1995-12-19 |
| 5431712 |
Reconfigurable pneumatic control for split/splitless injection |
W. Dale Snyder |
1995-07-11 |
| 5108466 |
Apparatus and methods for controlling fluids provided to a chromatographic detector |
Kenneth Klein, Richard Phillips, Michael Thompson |
1992-04-28 |
| 4658491 |
Method of making a corrosion proof multi-piece housing |
Gary Pletcher, Robert Tiley, Michael J. Cesaro |
1987-04-21 |