Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10336974 | Biogas plant service device | Johann Bierer, Andreas Czwaluk | 2019-07-02 |
| 9193945 | Biogas plant and service device for a biogas plant | Johann Bierer, Andreas Czwaluk | 2015-11-24 |
| 9162411 | Screw separator | Andreas Czwaluk | 2015-10-20 |
| 9138956 | Screw separator | Andreas Czwaluk | 2015-09-22 |
| 8661972 | Screw separator | Andreas Czwaluk | 2014-03-04 |
| 7993521 | Plant and method for generating biogas from biologically degradable material containing liquid and solid components, in particular waste products, and a biogas generation container for use in the plant | Dietrich Eichler, Friedrich Weigand | 2011-08-09 |