Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4448978 | Process for preparing maleic anhydride | James T. Wrobleski | 1984-05-15 |
| 4412940 | Method for preparing maleic anhydride catalyst | Harold Raffelson | 1983-11-01 |
| 4386215 | Maleic anhydride production with high crush strength catalysts | Warn D. Robinson | 1983-05-31 |
| 4359405 | Solvent conditioning of phosphorus-vanadium-oxygen catalysts | Warn D. Robinson | 1982-11-16 |
| 4337174 | Method for preparing a catalyst and intermediate formed thereby | Harold Raffelson | 1982-06-29 |
| 4276222 | Method of producing maleic anhydride | Warn D. Robinson | 1981-06-30 |
| 4253988 | Conditioning phosphorus-vanadium-oxygen catalyst | Warn D. Robinson | 1981-03-03 |