Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5308490 | Sewage delivery for an activated sludge process | Markus Schroeder, Dietmar Loch, Bernhard Woeffen, Carl-Johannes Soeder | 1994-05-03 |
| 5019266 | Waste water purification process with batchwise supply of waste water to the activated sludge tank | Carl-Johannes Soeder, Erich Zanders, Thomas Raphael, Heiner Keusen | 1991-05-28 |
| 4432869 | Method of treating agricultural wastes | Manfred Schluter | 1984-02-21 |
| 4348285 | Method of treating liquid agricultural wastes | Manfred Schluter | 1982-09-07 |