Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4888316 | Preparation of hydrotreating catalyst from spent catalyst | Dennis R. Kidd | 1989-12-19 |
| 4828683 | Hydrofining employing a support material for fixed beds | Simon G. Kukes | 1989-05-09 |