Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4873211 | Cracking catalyst and process | A. M. Schaffer | 1989-10-10 |
| 4846960 | Catalytic cracking | Fu-Ming Lee | 1989-07-11 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4873211 | Cracking catalyst and process | A. M. Schaffer | 1989-10-10 |
| 4846960 | Catalytic cracking | Fu-Ming Lee | 1989-07-11 |