Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6133740 | Chlorine specific gas chromatographic detector | Stanley D. Stearns | 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 | Stanley D. Stearns, Huamin Cai | 1998-06-16 |
| 5594346 | Apparatus and methods for identifying and quantifying compounds using a plurality of pulsed rare gas photoionization detectors | Stanley D. Stearns | 1997-01-14 |
| 5541519 | Photoionization detector incorporating a dopant and carrier gas flow | Stanley D. Stearns | 1996-07-30 |
| 5532599 | High voltage spark excitation and ionization system including disc detector | Stanley D. Stearns | 1996-07-02 |
| 5528150 | Gas sampling apparatus including a sealed chamber cooperative with a separate detector chamber | Stanley D. Stearns | 1996-06-18 |
| 5394090 | Improved system for detecting compounds in a gaseous sample using induced photoionizations and electron capture detection | Stanley D. Sterns | 1995-02-28 |
| 5394091 | System for detecting compounds in a gaseous sample by measuring photoionization and electron capture induced by spark excitation of helium | Stanley D. Stearns | 1995-02-28 |
| 5394092 | System for identifying and quantifying selected constituents of gas samples using selective photoionization | Stanley D. Stearns | 1995-02-28 |
| 5317271 | High voltage spark excitation and ionization detector system with adjustable sample input for sensitivity control | Stanley D. Stearns | 1994-05-31 |
| D332737 | Ceiling tile knife | Betty Wentworth | 1993-01-26 |
| 5153519 | High voltage spark excitation and ionization detector system | Stanley D. Stearns | 1992-10-06 |