Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4775387 | Sulfur removal and comminution of carbonaceous material | John A. Ruether, Dennis Smith | 1988-10-04 |
| H69 | Solvent treatment of coal for improved liquefaction | Herbert R. Appell, Bruce R. Utz | 1986-06-03 |