Issued Patents All Time
Showing 1–18 of 18 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5851712 | Electrophotosensitive material | Nariaki Muto, Keisuke Sumida, Hiroaki Iwasaki, Tsuneo Oki, Eiichi Miyamoto +1 more | 1998-12-22 |
| 5843606 | Phenanthrylenediamine derivative | Eiichi Miyamoto, Mikio Kakui, Hideo Nakamori, Yukikatsu Imanaka | 1998-12-01 |
| 5830615 | Naphthylenediamine derivative and electrophotosensitive material using the same | Eiichi Miyamoto, Mikio Kakui, Hideo Nakamori, Yukikatsu Imanaka, Tadashi Sakuma +4 more | 1998-11-03 |
| 5773613 | Tryptoanthrinimine derivative and electrophotosensitive material using the same | Hirofumi Kawaguchi, Nobuko Akiba, Yukimasa Watanabe, Hiroaki Iwasaki, Yasufumi Mizuta +7 more | 1998-06-30 |
| 5521044 | Electrophotosensitive material | Nariaki Muto, Keisuke Sumida, Hiroaki Iwasaki, Tsuneo Oki, Eiichi Miyamoto +1 more | 1996-05-28 |
| 5499486 | Process for packing electrophotographic photoreceptor | Keizo Kimoto, Hiroaki Sakai, Tsuneo Oki, Mamoru Uemura | 1996-03-19 |
| 5336576 | Electrophotographic photosensitive member having a photosensitive layer comprising the azo compound | Eiichi Miyamoto, Hiroaki Iwasaki, Yasufumi Mizuta, Akihiko Kawahara | 1994-08-09 |
| 5288576 | Electrophotographic member having an azo compound with diphenoquinone | Eiichi Miyamoto, Hiroaki Iwasaki, Yasufumi Mizuta, Akihiko Kawahara | 1994-02-22 |
| 5274084 | Bisazo compounds which contain a diphenoquinone tetraazo component and an electrophotographic photosensitive member having a photosensitive layer comprising the bisazo compound | Eiichi Miyamoto, Hiroaki Iwasaki, Yasufumi Mizuta, Akihiko Kawahara | 1993-12-28 |
| 5272031 | Benzidine derivative and photosensitive material using said derivative | Hiroaki Iwasaki | 1993-12-21 |
| 5258251 | Hydrazone compound and photosensitive material using said compound | Hiroaki Iwasaki | 1993-11-02 |
| 5256508 | Hydrazone compound and photosensitive material using said compound | Hiroaki Iwasaki | 1993-10-26 |
| 5246808 | Hydrazone compound and photosensitive material using said compound | Hiroaki Iwasaki | 1993-09-21 |
| 5213926 | Phenylenediamine derivative and photosensitive material using said derivative | Hiroaki Iwasaki | 1993-05-25 |
| 5135834 | Electrophotographic polyvinyl acetal layer containing element and process of producing | Yasufumi Mizuta, Kaname Nakatani | 1992-08-04 |
| 5063126 | Electrophotographic photosensitive material | Kaname Nakatani, Yasufumi Mizuta | 1991-11-05 |
| 5004662 | Electrophotographic photosensitive material containing m-phenylenediamine compound | Nariaki Mutoh, Toshihiko Nishiguchi | 1991-04-02 |
| 4925759 | Electrophotographic sensitive material with pyrrolopyrrole and benzidine derivatives | Kaname Nakatani | 1990-05-15 |