Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4875994 | Process and apparatus for catalytic cracking of residual oils | James H. Haddad, Hartley Owen | 1989-10-24 |
| 4810360 | Method and apparatus for withdrawal of small catalyst particles in FCC systems | James H. Haddad, Hartley Owen | 1989-03-07 |