Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE40565 | Method and device for purifying waste water comprising an additional sludge treatment by ozonation | Roger Pujol, André Haubry | 2008-11-11 |
| 6780319 | Method and installation for treating effluents, comprising an additional treatment of the sludge by ozonization | Anne Mechineau, Roger Pujol | 2004-08-24 |
| 6337020 | Method and device for purifying waste water comprising an additional sludge treatment by ozonation | Roger Pujol, André Haubry | 2002-01-08 |
| 6162359 | Method for recuperating vent gas coming from an ozonization reactor | Marc ANDRÉ, Pierre Liechti, Denis Marchand | 2000-12-19 |