Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4364848 | Passivation of metal contaminants on cracking catalyst | John C. Hayes | 1982-12-21 |
| 4361496 | Passivation of metal contaminants on cracking catalyst | John C. Hayes | 1982-11-30 |