Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4994174 | Process and system for low-temperature carbonization of oil shale, oil sands or similar oil-bearing solids | Konrad Kunstle, Gerd Brunner, Jurgen Hoffmann | 1991-02-19 |