Issued Patents 1994
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5374350 | Process for treating heavy oil | Roland H. Heck | 1994-12-20 |
| 5364524 | Process for treating heavy oil | Randall D. Partridge | 1994-11-15 |
| 5358634 | Process for treating heavy oil | — | 1994-10-25 |