Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4711868 | Process for preparing silica-alumina | Marvin M. Johnson | 1987-12-08 |
| 4656230 | Hydrogenation process | Rex L. Bobsein, Marvin M. Johnson | 1987-04-07 |
| 4629767 | Hydrogenation process and catalyst | Rex L. Bobsein, Marvin M. Johnson | 1986-12-16 |
| 4617108 | Process for cracking with silica-alumina | Marvin M. Johnson | 1986-10-14 |
| 4547486 | Catalyst and method of preparing catalyst | — | 1985-10-15 |