Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4847358 | Process for producing polyamide acid having siloxane bonds and polyimide having siloxane bonds and isoindoloquinazolinedione rings | Mitsumasa Kojima, Takayuki Saito, Toul Kikuchi, Shun-ichiro Uchimura, Hidetaka Satou | 1989-07-11 |
| 4803543 | Semiconductor device and process for producing the same | Hideo Inayoshi, Akira Suzuki, Kunihiro Tsubosaki, Toyoichi Ueda, Nobuo Ichimura +1 more | 1989-02-07 |
| 4801519 | Process for producing a pattern with negative-type photosensitive composition | Shigeru Koibuchi, Asao Isobe, Yutaka Takeda | 1989-01-31 |