Issued Patents All Time
Showing 26–37 of 37 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4438816 | Process for recovery of hydrocarbons from oil shale | Russell W. Johnson, Lee Hilfman | 1984-03-27 |
| 4401549 | Liquefaction of calcium-containing coals | — | 1983-08-30 |
| 4401550 | Liquefaction of calcium-containing coals | — | 1983-08-30 |
| 4383983 | Method for the removal of carbon or carbon compounds from a waste stream | — | 1983-05-17 |
| 4358427 | Removal of hydrogen sulfide from geothermal steam | — | 1982-11-09 |
| 4324122 | Metal strip cold-reduction mill | — | 1982-04-13 |
| 4259948 | Endoscopic system | — | 1981-04-07 |
| 4256713 | Flue gas treatment with intermittent addition of alkaline reagent to scrubbing liquor | — | 1981-03-17 |
| 4250153 | Flue gas treatment | — | 1981-02-10 |
| 4248694 | Process for treating a sour petroleum distillate | David H. J. Carlson | 1981-02-03 |
| 4237104 | Flue gas treatment for sulfur dioxide removal | John C. Stauter, William K. Tolley | 1980-12-02 |
| 4234547 | Flue gas treatment | — | 1980-11-18 |