Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4868261 | Optical resin material | Akihiro Kobayashi, Toshiyuki Fujita, Hiromasa Kawai, Yutaka Hosoi, Hideaki Shibata | 1989-09-19 |
| 4847358 | Process for producing polyamide acid having siloxane bonds and polyimide having siloxane bonds and isoindoloquinazolinedione rings | Mitsumasa Kojima, Toul Kikuchi, Shun-ichiro Uchimura, Hidetaka Satou, Daisuke Makino | 1989-07-11 |