Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4234407 | Reactor and method for hydrocracking carbonaceous material | Dennis A. Duncan, Justin L. Beeson, R. Donald Oberle | 1980-11-18 |
| 4209490 | Reactor coking simulator | Dennis A. Duncan | 1980-06-24 |