Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5759403 | Method for purifying waste water using activated slude to increase purification yields | Norbert Wamser, Manfred Hangl, Harald Trooper, Bernard Capdeville | 1998-06-02 |
| 5229094 | Talc substances having specific surface properties, methods of manufacture and applications | Richard Baeza, Yves Pietrasanta, Alain Rousseau | 1993-07-20 |