Issued Patents All Time
Showing 26–50 of 50 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8529516 | Syringe for injection through zone of body | — | 2013-09-10 |
| 8251999 | Treatment delivery system | H. Max Loy, Jr. | 2012-08-28 |
| 8084000 | Dopant delivery system for use in ion mobility and ion trap mobility spectrometry | Santos Anthony Puente, John Kelly, Brian David Russell | 2011-12-27 |
| 7601543 | Method of modulating a second carrier for partial modulation via pulsed flow modulator for comprehensive two-dimensional liquid or gas chromatography | Huamin Cai | 2009-10-13 |
| 7442902 | Adaptive temperature controller | Huamin Cai, Chris S. Cowles | 2008-10-28 |
| 7091044 | Partial modulation via pulsed flow modulator for comprehensive two-dimensional liquid or gas chromatography | Huamin Cai | 2006-08-15 |
| 6933771 | Optically generated isolated feedback stabilized bias | Chris S. Cowles | 2005-08-23 |
| 6842008 | Gas detector with modular detection and discharge source calibration | Huamin Cai | 2005-01-11 |
| 6247731 | Nut with controlled internal radius | Herbert Max Loy, Jr. | 2001-06-19 |
| 6193213 | Variable pressure loading system utilizing combined spring and fluid pressure | Ales Plistil | 2001-02-27 |
| 6133740 | Chlorine specific gas chromatographic detector | Wayne E. Wentworth | 2000-10-17 |
| 5767683 | System for detecting compounds in a gaseous sample using photoionization, electron capture detection, and a constant current feedback control circuit which responds to compound concentration | Huamin Cai, Wayne E. Wentworth | 1998-06-16 |
| 5741126 | Valveless metering pump with crisscrossed passage ways in the piston | Paul Werner | 1998-04-21 |
| 5594346 | Apparatus and methods for identifying and quantifying compounds using a plurality of pulsed rare gas photoionization detectors | Wayne E. Wentworth | 1997-01-14 |
| 5541519 | Photoionization detector incorporating a dopant and carrier gas flow | Wayne E. Wentworth | 1996-07-30 |
| 5532599 | High voltage spark excitation and ionization system including disc detector | Wayne E. Wentworth | 1996-07-02 |
| 5528150 | Gas sampling apparatus including a sealed chamber cooperative with a separate detector chamber | Wayne E. Wentworth | 1996-06-18 |
| 5394092 | System for identifying and quantifying selected constituents of gas samples using selective photoionization | Wayne E. Wentworth | 1995-02-28 |
| 5394091 | System for detecting compounds in a gaseous sample by measuring photoionization and electron capture induced by spark excitation of helium | Wayne E. Wentworth | 1995-02-28 |
| 5317271 | High voltage spark excitation and ionization detector system with adjustable sample input for sensitivity control | Wayne E. Wentworth | 1994-05-31 |
| 5153519 | High voltage spark excitation and ionization detector system | Wayne E. Wentworth | 1992-10-06 |
| 4779465 | Method and apparatus for training horn players | John K. McGee | 1988-10-25 |
| 4550742 | Variable tensioning system for shear seal valves | — | 1985-11-05 |
| 4300393 | Sample introduction apparatus for gas chromatographic analysis using packed or capillary bore open tubular columns and method of testing | — | 1981-11-17 |
| 4281679 | Flow control means for use in an adaptor assembly | — | 1981-08-04 |