Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6997638 | Anti-terrorist road block | Robert C. Herrin, David L. Stice, Robert L. Sims | 2006-02-14 |
| 5635080 | Filter system with external scrubber | — | 1997-06-03 |
| 5407574 | Filter media for filter systems | — | 1995-04-18 |
| 5388646 | Method for rejuvenation of injection wells | — | 1995-02-14 |
| 4966698 | Filter system and scrubber | — | 1990-10-30 |
| 4826609 | Filter media for filter systems | — | 1989-05-02 |
| 4787987 | Filter apparatus and method | — | 1988-11-29 |
| 4496464 | Filter apparatus and method | — | 1985-01-29 |
| 4354553 | Corrosion control downhole in a borehole | — | 1982-10-19 |