Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4234319 | Process for changing caking coals to noncaking coals | — | 1980-11-18 |
| 4234407 | Reactor and method for hydrocracking carbonaceous material | Dennis A. Duncan, R. Donald Oberle, Henry A. Dirksen | 1980-11-18 |