Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5538636 | Process for chemically oxidizing highly concentrated waste waters | Michael Gnann, Siegfried Schelle | 1996-07-23 |
| 4966706 | Process for treatment of clarification sludge | — | 1990-10-30 |
| 4341632 | Destruction of bulking sludge | Hans Reimann, Alfred Wildmoser | 1982-07-27 |