Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5076812 | Coal treatment process and apparatus therefor | — | 1991-12-31 |
| 5066310 | Method for recovering light hydrocarbons from coal agglomerates | Horst Huettenhain, August D. Benz | 1991-11-19 |