Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4888319 | Silica-alumina extrudates | Jacobus T. Daamen | 1989-12-19 |
| 4857170 | Hydrocarbon conversion catalysts | Arend Hoek, Ian E. Maxwell | 1989-08-15 |
| 4857171 | Hydrocarbon conversion process and catalysts | Arend Hoek, Ian E. Maxwell | 1989-08-15 |
| 4836910 | Catalytic dewaxing with zeolite theta-1 | Jacob A. van de Griend, Arend Hoek | 1989-06-06 |