Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5100640 | Method of operating a Claus-plant | Rainer Dittmer, Manfred Gross | 1992-03-31 |
| 4973340 | Method of removing hydrosulfide from partial oxidation gas | Manfred Gross | 1990-11-27 |