Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4864057 | Dehydrogenation of carboxylic acids with mixed metal phosphorus oxide catalysts | James L. Callahan, Harley F. Hardman | 1989-09-05 |
| 4810807 | Hydrogenation of maleic anhydride to tetrahydrofuran | John R. Budge | 1989-03-07 |