Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5445728 | Method for the reactivation of spent alumina-supported hydrotreating catalysts | David E. Sherwood, Jr. | 1995-08-29 |
| 5254513 | Method for the reactivation of spent alumina-supported hydrotreating catalysts | David E. Sherwood, Jr. | 1993-10-19 |
| 5209840 | Separation of active catalyst particles from spent catalyst particles by air elutriation | David E. Sherwood, Jr., John A. Lemen | 1993-05-11 |