Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5961835 | Process and installation for the separation of heavy and light compounds by extraction using a supercritical fluid and nanofiltration | Stephane Sarrade, Christian Perre, Paul Vignet | 1999-10-05 |
| 5512058 | Process for the treatment of skins, hides or shett materials containing collagen by a dense, pressurized fluid | Gerard Gavend, Bernard Vulliermet, Christian Perre | 1996-04-30 |
| 5342521 | Reverse osmosis or nanofiltration membrane and its production process | Colette Bardot, Rene Desplantes, Luc Shrive | 1994-08-30 |
| 4824570 | Apparatus for the extraction of constituents by a supercritical fluid or pressurized liquid | Louis Bethuel, Roger Neige | 1989-04-25 |
| 4544531 | Uranium hexafluoride purification process | Jacques Aubert, Louis Bethuel | 1985-10-01 |