Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5829269 | Method of and plant for reliquefying gaseous helium | Yves Pecoud, Pierre Briend, Guy Gistau Baguer | 1998-11-03 |
| 5511382 | Process and installation for the cryogenic purification of hydrogen | Catherine Denis, Pierre Gauthier | 1996-04-30 |
| 4242039 | Pump impeller seals with spiral grooves | Gilbert Berthereau | 1980-12-30 |