Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5075007 | Biological wastewater purification with a downstream precipitation stage | Wolfgang Reiser | 1991-12-24 |
| 4664804 | Process for the removal of heavy metals contained in wastewaters | Allen Frydman | 1987-05-12 |
| 4627917 | Process for the anaerobic decomposition of organic substrate | — | 1986-12-09 |
| 4559142 | Split feed for the anaerobic biological purification of wastewater | — | 1985-12-17 |
| 4551250 | Process for the anaerobic biological purification of wastewater | Uwe Fuchs | 1985-11-05 |