Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7892431 | Method and device for purification of effluent | Harald Kraft, Hans-Thomas Armbruster | 2011-02-22 |
| 7175764 | Method and device for purifying wastewaters | Harald Kraft, Hans-Thomas Armbruster | 2007-02-13 |