Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9512375 | Method and apparatus for generating a methane-containing substitute natural gas and related energy supply system | Michael Specht, Volkmar Frick, Ulrich Zuberbuehler, Sebastian Thaler | 2016-12-06 |
| 9057138 | Energy supply system and operating method | Volkmar Frick, Michael Specht, Michael Sterner, Berthold Hahn, Ulrich Zuberbuehler | 2015-06-16 |