Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4444007 | Method for combined cycle electrical power generation | David S. Mitchell | 1984-04-24 |
| 4443229 | Gasification process for carbonaceous materials | David S. Mitchell | 1984-04-17 |
| 4191540 | Carbon dioxide acceptor process using countercurrent plug flow | David S. Mitchell | 1980-03-04 |
| 4183800 | Indirect heat retorting process with cocurrent and countercurrent flow of hydrocarbon-containing solids | David S. Mitchell | 1980-01-15 |