Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4483772 | Process for treating aqueous effluents | Dietrich Rolke, Hans Hitzel | 1984-11-20 |
| 4394215 | Apparatus for converting coal into liquid products | Berend Jager, Cornelis Kleynjan | 1983-07-19 |
| 4318797 | Process for converting coal into liquid products | Berend Jager, Cornelis Kleynjan | 1982-03-09 |