Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4847057 | Process and installation for ammonia treatment of a gas | Jean-Renaud Brugerolle, Michel Combe | 1989-07-11 |
| 4834779 | Process for membrane seperation of gas mixtures | Richard A. Sauer, Daniel Deloche | 1989-05-30 |