Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4501820 | Method for the recovery of a tungsten-containing catalyst from coke containing nickel and vanadium | David E. Allan, Byron V. Molstedt | 1985-02-26 |
| 4272400 | Regeneration of spent hydrodesulfurization catalysts employing presulfiding treatment and heteropoly acids | Bernard G. Silbernagel, Gopal H. Singhal | 1981-06-09 |
| 4272401 | Regeneration of spent hydrodesulfurization catalyst with heteropoly acids | Gopal H. Singhal | 1981-06-09 |
| 4268415 | Regeneration of spent hydrodesulfurization catalysts with heteropoly acids and hydrogen peroxide | Bernard G. Silbernagel, Gopal H. Singhal | 1981-05-19 |