Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5334307 | Resid hydroprocessing catalyst | Howard D. Simpson, John W. Ward | 1994-08-02 |
| 5210061 | Resid hydroprocessing catalyst | Howard D. Simpson, John W. Ward | 1993-05-11 |
| 4729826 | Temperature controlled catalytic demetallization of hydrocarbons | David A. Lindsay, Michael C. Smith, Walter Albertson | 1988-03-08 |