Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4851127 | Novel amine-based presursor compounds and composite membranes thereof | Mark E. Tuttle | 1989-07-25 |
| 4824443 | Gas separation by composite solvent-swollen membranes | Stephen L. Matson, Dwayne T. Friesen, Donald J. Kelly | 1989-04-25 |