Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4830883 | Polyimide foam precursor and its use in reinforcing open-cell materials | — | 1989-05-16 |
| 4824874 | Polyimide foam precursor and its use in reinforcing open-cell materials | — | 1989-04-25 |
| 4806573 | Polyimide foam precursor and its use in reinforcing open-cell materials | — | 1989-02-21 |