Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4853189 | Apparatus for conversion of oils to hydrocarbon products | — | 1989-08-01 |
| 4851196 | Fluid catalytic cracking unit | Chester O. Bowen | 1989-07-25 |
| 4800014 | Catalytic cracking process | George E. Hays, Richard H. Nielsen, Chester O. Bowen | 1989-01-24 |