Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4785746 | Carbonaceous slurry combustor | Douglas B. Sheppard | 1988-11-22 |
| 4660478 | Slagging combustor with externally-hot fuel injector | Douglas B. Sheppard, Albert Solbes | 1987-04-28 |