Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11603855 | Impeller for wastewater pump | — | 2023-03-14 |
| 9783772 | Control of biogas plants | Kai Rostalski | 2017-10-10 |
| 9556739 | Impeller for centrifugal pumps | — | 2017-01-31 |
| 8889404 | Method and apparatus for producing biogas | Kai Rostalski | 2014-11-18 |
| 6343909 | Centrifugal pump | Wolfgang Kochanowski, Christian Haag, Thomas Pensler | 2002-02-05 |
| 5785495 | Fiber-repellant centrifugal pump | Roland Wellmeier | 1998-07-28 |