Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4251347 | White mineral oil made by two stage hydrogenation | Maurice K. Rausch, by Doris Erickson, executor, Gerald E. Tollefsen, Thomas W. Kelly | 1981-02-17 |
| 4251350 | Hydrocarbon hydrotreating process | Marvin F. L. Johnson | 1981-02-17 |
| 4202798 | Phosphorous-containing catalyst and method for preparing and using same | Marvin F. L. Johnson | 1980-05-13 |