Issued Patents All Time
Showing 76–78 of 78 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5393326 | Process for the production of a gas with a substantial oxygen content | Yves Engler, Wilfrid Petrie | 1995-02-28 |
| 5314528 | Permeation process and apparatus | — | 1994-05-24 |
| 5254154 | Process for the purification of a gas by adsorption | Pierre Gauthier | 1993-10-19 |