Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4873390 | Chemical conversion process | Joe B. Price | 1989-10-10 |
| 4861938 | Chemical conversion process | William H. Henstock | 1989-08-29 |
| 4849575 | Production of olefins | — | 1989-07-18 |
| 4814541 | Chemical conversion process | — | 1989-03-21 |