Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4567158 | Process for preparing phosphorus-vanadium mixed oxide oxidation catalysts | James W. Edwards, Charles R. Graham, Robert A. Keppel, Harold Raffelson | 1986-01-28 |
| 4562268 | Process for producing maleic anhydride | James W. Edwards, Charles R. Graham, Robert A. Keppel, Harold Raffelson | 1985-12-31 |
| 4560674 | Catalysts for the production of maleic anhydride | James W. Edwards, Charles R. Graham, Robert A. Keppel, Harold Raffelson | 1985-12-24 |
| 4528280 | Process for preparing phosphorus-vanadium mixed oxide catalysts | — | 1985-07-09 |
| 4515973 | Process for producing maleic anhydride | — | 1985-05-07 |
| 4456764 | Process for the manufacture of maleic anhydride | — | 1984-06-26 |
| 4448978 | Process for preparing maleic anhydride | Ramon A. Mount | 1984-05-15 |
| 4381254 | Method for preparing catalysts for production maleic anhydride | — | 1983-04-26 |