Issued Patents All Time
Showing 26–27 of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4435275 | Hydrocracking process for aromatics production | Walter R. Derr | 1984-03-06 |
| 4181598 | Manufacture of lube base stock oil | Bernard M. Gillespie, Kenneth W. Smith | 1980-01-01 |