Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6087031 | Polymer electrolyte and process for producing the same | Katsuhiko Iwasaki, Taketsugu Yamamoto, Atsushi Terahara | 2000-07-11 |
| 5135791 | Optical device | Shozaburo Imai, Masahiko Moritani, Masahiro Niwano, Kenji Manabe | 1992-08-04 |
| 4812345 | Optical disk substrate | Shozaburo Imai, Kazuhiro Yokoo, Hideaki Matsuura | 1989-03-14 |
| 4785053 | Optical resin material having improved birefringence | Iko Ito, Shozaburo Imai | 1988-11-15 |
| 4385168 | Process for producing polyphenylene oxide | Katsuji Ueno, Takashi Maruyama, Haruo Inoue, Yoshiharu Tatsukami | 1983-05-24 |