Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4843050 | Catalyst regeneration | William C. Rahlwes | 1989-06-27 |
| 4816134 | Passivation of metal contaminated cracking catalysts | Allen S. Lasater | 1989-03-28 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4843050 | Catalyst regeneration | William C. Rahlwes | 1989-06-27 |
| 4816134 | Passivation of metal contaminated cracking catalysts | Allen S. Lasater | 1989-03-28 |