Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4886934 | Process for the conversion of a hydrocarbonaceous feedstock | Johannes K. Minderhoud | 1989-12-12 |
| 4857170 | Hydrocarbon conversion catalysts | Arend Hoek, Tom Huizinga | 1989-08-15 |
| 4857171 | Hydrocarbon conversion process and catalysts | Arend Hoek, Tom Huizinga | 1989-08-15 |