Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7350917 | Light control plastic lens, coated sheet-like light control element for the lens production, and a production method for light control plastic lens | Ryozo Kawai, Yoshiyuki Aoki, Kyohei Takakuwa, Toshizumi Hirota, Motoharu Takeuchi | 2008-04-01 |
| 6576735 | Polycarbonate resin | Tatsuya Kanagawa, Noriyoshi Ogawa, Hidekazu Nakatani, Noriaki Honda | 2003-06-10 |
| 6288204 | Branched polycarbonate resin and process for producing the same | Noriyoshi Ogawa, Takahiro Adachi, Noriaki Honda | 2001-09-11 |
| 5457174 | Method for preparing polycarbonates by transesterification in a steel reactor | Katsushige Hayashi, Masayuki Nakajima, Takuya Hasaki, Masahiko Ishikawa, Atsushi Hirashima | 1995-10-10 |
| 5118726 | Polycarbonate resin composition for radiation sterilization | Makoto Mizutani, Satoshi Nagai, Toshiaki Aso | 1992-06-02 |
| 5021541 | Polycarbonate resin from bis(hydroxy benzoyl oxy-tetra oxa spiro) cpd. | Satoshi Kanayama, Toshiaki Asoh, Teruo Kawahigashi | 1991-06-04 |
| 4952664 | Process for producing weather-resistant polycarbonate with triazine-imide chain terminator | Satoshi Kanayama | 1990-08-28 |
| 4924025 | Novel dihydroxy compound | Toshiaki Asoh, Youichirou Ezaki, Hiroshi Aibe | 1990-05-08 |