Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5373699 | Process for the production of nitrogen by cryogenic distillation of atmospheric air | Francois Venet, Bao Ha, Naohiko Yamashita | 1994-12-20 |
| 5325674 | Process for the production of nitrogen by cryogenic distillation of atmospheric air | Francois Venet, Bao Ha, Naohiko Yamashita | 1994-07-05 |
| 5137548 | Process and apparatus for purifying air to be distilled by adsorption | Maurice Grenier, Pierre Petit, Francois Venet | 1992-08-11 |