Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5160395 | Method of manufacturing biological water treatment contact material | Hartwig Basse | 1992-11-03 |
| 5104716 | Contact material | Hartwig Basse | 1992-04-14 |
| 5073256 | Equipment for biological water treatment, in particular for denitrification of raw water to produce potable water | Rolf Sieksmeyer | 1991-12-17 |
| 4985182 | Packing element | Hartwig Basse | 1991-01-15 |
| 4935130 | Equipment for biological water treatment, in particular for denitrification of raw water to produce potable water | Rolf Sieksmeyer | 1990-06-19 |