Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4889615 | Additive for vanadium capture in catalytic cracking | Arthur A. Chin, Ivy D. Johnson, Charles T. Kresge | 1989-12-26 |
| 4843051 | Fluid catalytic cracking regeneration with reduction of nitrogen emissions | Richard C. Kovacs, Frederick J. Krambeck | 1989-06-27 |