Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5851712 | Electrophotosensitive material | Keisuke Sumida, Hiroaki Iwasaki, Tsuneo Oki, Eiichi Miyamoto, Yasuyuki Hanatani +1 more | 1998-12-22 |
| 5550290 | Benzidine derivative and electrophotosensitive material using the same | Yasufumi Mizuta, Masashi Tanaka, Toshiyuki Fukami, Hideo Nakamori, Mikio Kakui +4 more | 1996-08-27 |
| 5521044 | Electrophotosensitive material | Keisuke Sumida, Hiroaki Iwasaki, Tsuneo Oki, Eiichi Miyamoto, Yasuyuki Hanatani +1 more | 1996-05-28 |
| 5514508 | Electrophotosensitive material | Toshiyuki Fukami, Hideo Nakamori, Hiroshi Shiomi, Hirofumi Kawaguchi, Hisakazu Uegaito +4 more | 1996-05-07 |
| 5223364 | Electrophotographic photoconductor and a method for preparing the same | Tatsuo Maeda, Eiichi Miyamoto | 1993-06-29 |
| 5153088 | Electrophotosensitive material with x-type metal free phthalocyanine and perylene compound | Tatsuo Maeda, Hirotsugu Nishikawa, Mikio Kakui, Keisuke Sumida, Toru Nakazawa | 1992-10-06 |
| 5087544 | Perylene electrophotosensitive material with m-phenylenediamine | Mikio Kakui, Keisuke Sumida, Toru Nakazawa, Kazuo Matsumoto | 1992-02-11 |
| 5059503 | Electrophotosensitive material with combination of charge transfer materials | Tatsuo Maeda, Toshihiko Nishiguchi, Mikio Kakui, Keisuke Sumida, Toru Nakazawa | 1991-10-22 |