Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4388173 | Method and apparatus for distillation of oil shale | Heinz Frohnert, Hans-Peter Wenning | 1983-06-14 |
| 4302353 | Method for the production of synthesis gas | Johann Harjung, H. Peter Wenning | 1981-11-24 |