Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6046343 | Prevention of catalyst attrition and tar formation in manufacture of maleic anhydride | Robert A. Keppel, A. Lamar Reeves | 2000-04-04 |
| 6005121 | High productivity process for the production of maleic anhydride | Jerry R. Ebner, Robert A. Keppel | 1999-12-21 |
| 5877331 | Prevention of catalyst attrition and tar formation in manufacture of maleic anhydride | Robert A. Keppel, A. Lamar Reeves | 1999-03-02 |
| 5773382 | High performance VPO catalyst and process of preparation thereof | Scott F. Mitchell, Robert A. Keppel | 1998-06-30 |
| 5734066 | Supression of autoignition in maleic anhydride production | Robert A. Keppel, Scott F. Mitchell | 1998-03-31 |
| 5641722 | High performance VPO catalyst and process of preparation thereof | Scott F. Mitchell, Robert A. Keppel | 1997-06-24 |
| 4855459 | Process for the production of maleic anhydride | — | 1989-08-08 |