Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4880895 | Polyimide film-forming polyamide acid solution | Kazumi Higashi | 1989-11-14 |
| 4876330 | Colorless transparent polyimide shaped article and process for producing the same | Kazumi Higashi | 1989-10-24 |
| 4874834 | Colorless transparent polyimide shaped article and process for producing the same | Kazumi Higashi | 1989-10-17 |