Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4883601 | Process for purifying an aqueous, hydrogen sulfide-scrubbing solution | Dennis D. Delaney | 1989-11-28 |
| 4871445 | Hydrocarbon conversion | Suheil F. Abdo | 1989-10-03 |
| 4847018 | Process for producing petroleum sulfonates | Wen-Ching Hsieh, June M. Bostich | 1989-07-11 |