Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6146532 | Process for the biological purification of wastewater | — | 2000-11-14 |
| 5746920 | Process for purifying dairy wastewater | Peter Boergardts, Wolfgang Krischke | 1998-05-05 |