Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5759403 | Method for purifying waste water using activated slude to increase purification yields | Frederic Clauss, Norbert Wamser, Harald Trooper, Bernard Capdeville | 1998-06-02 |
| 4775991 | Method of and apparatus for grain-size analysis | Gernot Staudinger, Peter Pechtl | 1988-10-04 |