Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4876329 | Polyimide polymers and copolymers using 3,5-diaminobenzotrifluoride | Weilong L. Chiang, Neal R. Nowicki | 1989-10-24 |
| 4855503 | Preparation of P,P'-oxybis(aniline) | Gary P. Hagen | 1989-08-08 |