Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4857170 | Hydrocarbon conversion catalysts | Tom Huizinga, Ian E. Maxwell | 1989-08-15 |
| 4857171 | Hydrocarbon conversion process and catalysts | Tom Huizinga, Ian E. Maxwell | 1989-08-15 |
| 4836910 | Catalytic dewaxing with zeolite theta-1 | Jacob A. van de Griend, Tom Huizinga | 1989-06-06 |