Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6395173 | Method and device for biologically treating a fluid charged with organic materials whilst producing biogas | — | 2002-05-28 |
| 5811008 | Process and system for purification of waste water | — | 1998-09-22 |
| 5472611 | Process and apparatus for purification of wastewater | Peter Kroner | 1995-12-05 |
| 5089179 | Floating aerator arrangement | — | 1992-02-18 |
| 4797212 | Biological purification of waste waters | — | 1989-01-10 |
| 4448689 | Apparatus for final clearing of waste water | — | 1984-05-15 |
| 4287062 | Apparatus for biological purification of sewage | — | 1981-09-01 |