Issued Patents All Time
Showing 26–27 of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4933071 | Iron removal from hydrocarbonaceous feedstock | — | 1990-06-12 |
| 4789462 | Reverse-graded catalyst systems for hydrodemetalation and hydrodesulfurization | Donald F. Byrne, David Johnson | 1988-12-06 |