Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5164091 | Removal of metal ions from process wastewaters | Guenther Huber, Wolfgang Habermann, Rolf Klassen | 1992-11-17 |
| 4411797 | Dewatering of sewage sludges on chamber filter presses | Bruno Sander, Klaus Hess, Peter Lintz | 1983-10-25 |