Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4881949 | Method of starting a gasifier | Hermann Schumacher | 1989-11-21 |
| 4478725 | Process for the oxidation of hydrogen sulphide dissolved in the waste water from a coal gasification process | Gunther Velling | 1984-10-23 |