Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6423532 | Refuse-treatment method and apparatus | — | 2002-07-23 |
| 5521092 | Fermentation plant | Urs Schmutz | 1996-05-28 |
| 4504394 | Process for the treatment of organic fall-out products | Hans-Peter Breuer, Gerhard Velebil | 1985-03-12 |