Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4401553 | System and method for lowered hydrogen sulfide emissions from oil shale | — | 1983-08-30 |
| 4325925 | Method for the removal of nitric oxide from gas streams | Frank C. Haas | 1982-04-20 |