Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 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 |