Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4873216 | Lanthana-alumina-aluminum phosphate catalyst composition | Robert P. L. Absil, Arthur W. Chester, Garry W. Kirker | 1989-10-10 |
| 4834869 | Resid upgrading process | Pochen Chu, Thomas F. Degnan, Garry W. Kirker | 1989-05-30 |
| 4812228 | Process for hydrotreating residual petroleum oil | Thomas F. Degnan, Michael E. Landis | 1989-03-14 |
| 4810361 | Resid hydrotreating process using lanthana-alumina-aluminum phosphate catalyst | Robert P. L. Absil, Arthur W. Chester, Garry W. Kirker | 1989-03-07 |