Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5180658 | White polyester composition and support for photography | Kazuto Kiyohara, Hiromitsu Araki, Toshiaki Yamazaki | 1993-01-19 |
| 4978740 | Copolyester and polyester film having said copolyester as subbing layer | Hitoshi Kawamoto, Yoshimichi Ozawa, Hiroshi Naito, Yoshihiro Wada, Toshiaki Yamazaki | 1990-12-18 |
| 4898897 | Process for producing polyester resin composition | Kazuto Kiyohara, Toshiaki Yamazaki, Takanori Nakadate, Kentaro Noguchi, Michiteru Nakano +2 more | 1990-02-06 |
| 4877819 | Process for producing polyester resin composition | Kazuto Kiyohara, Toshiyuki Hagiwara, Takanori Nakadate, Kentaro Noguchi, Shigeru Sakae +1 more | 1989-10-31 |
| 4699744 | Method of manufacturing a photographic reflecting support | Takanori Nakadate, Kazuto Kiyohara | 1987-10-13 |