Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4845241 | Process for the manufacture of maleic | Robert C. Edwards | 1989-07-04 |
| 4824819 | Vanadium coated phosphorus-vandium oxide and phosphorus-vanadium oxide co-metal catalyst and process for the manufacture of maleic anhydride | Robert C. Edwards | 1989-04-25 |