Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6794552 | Hydrocarbon hydrogenation catalyst and process | Darin B. Tiedtke, Marvin M. Johnson, Gary A. Delzer | 2004-09-21 |
| 6737557 | Hydrocarbon upgrading process | Steven A. Owen, Marvin M. Johnson, Mark E. Lashier | 2004-05-18 |
| 6734130 | Hydrocarbon hydrogenation catalyst composition, a process of treating such catalyst composition, and a process of using such catalyst composition | Joseph Bergmeister, III, Marvin M. Johnson | 2004-05-11 |