Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7540822 | Toroidal gearing | Steffen Henzler | 2009-06-02 |
| 7524262 | Toroidal power transmission | Steffen Henzler, Dinh Cong Nguyen | 2009-04-28 |
| 4769157 | Process for the thermal treatment of sludges | Heinrich Steuber, Winfried Liebig | 1988-09-06 |
| 4742623 | Process and equipment for the indirect drying of sludge, especially for the drying of wastewater sludge | Peter Meurer, Heinrich Steuber, Winfried Liebig, Ludwig Muhlhaus | 1988-05-10 |
| 4657565 | Process for the separation of fluids of different vapor pressures | Helmut E. Siekmann, Winfried Liebig | 1987-04-14 |
| 4617130 | Process and equipment, in particular for the conditioning of waste water sludges | Helmut E. Siekmann, Winfried Liebig | 1986-10-14 |