Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4847225 | Catalysts and catalyst supports | — | 1989-07-11 |
| 4843052 | Acid-reacted metakaolin catalyst and catalyst support compositions | — | 1989-06-27 |
| 4836913 | Catalytic cracking process exploying a zeolite as catalysts and catalyst supports | George J. Surland | 1989-06-06 |