Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4880442 | Polyimide gas separation membranes | — | 1989-11-14 |
| 4863496 | Reactive posttreatment for gas separation membranes | Okan M. Ekiner, Philip Manos | 1989-09-05 |
| 4851505 | Highly soluble aromatic polyimides | — | 1989-07-25 |
| 4838900 | Polyimide gas separation membranes | — | 1989-06-13 |