Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4873392 | Catalytic conversion of aqueous ethanol to ethylene | — | 1989-10-10 |
| 4847223 | Superacidic catalysts for low temperature conversion of aqueous ethanol to ethylene | Thanh My Nguyen | 1989-07-11 |
| 4810280 | Method for enhancing water retention in soil | Gerald P. McLaughlin, Pierre Levesque, Jacques Dunnigan | 1989-03-07 |