Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6254778 | Method for purifying carbon-containing pollution and denitrifying waste water in oxygenic medium | Claude Grimaud, Roger Pujol | 2001-07-03 |
| 6077430 | Method for eliminating phosphorous contained in effluents | Roger Pujol | 2000-06-20 |
| 5643453 | Process for the treatment of liquid effluents by activated sludge | Michele Pannier | 1997-07-01 |
| 5480551 | Process for the biological treatment of water | Michele Pannier | 1996-01-02 |