Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7300035 | Valve, actuator and control system therefor | Albert S. Davis, John M. Saldivar, Frank J. Arriens, Daryl Ard, Anthony Laitkep +3 more | 2007-11-27 |
| 7021602 | Valve, actuator and control system therefor | Albert S. Davis, John M. Saldivar, Frank J. Arriens, Daryl Ard | 2006-04-04 |
| 6986499 | Valve, actuator and control system therefor | Albert S. Davis, John M. Saldivar, Frank J. Arriens, Daryl Ard | 2006-01-17 |
| 6688324 | Valve for hydrate forming environments | Loc Gia Hoang | 2004-02-10 |
| 6554024 | Stem seal pressure telltale | Paul M. Gutmann, Daryl Ard | 2003-04-29 |
| 4827963 | Heat sensitive shaft locking apparatus and valve using same | Gerald S. Baker | 1989-05-09 |