Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9785102 | Rotatable fixing member, manufacturing method thereof and fixing device | Masahito Omata, Shuichi Tetsuno, Akeshi Asaka, Masayuki Onuma, Yusuke Baba +1 more | 2017-10-10 |
| 8208844 | Roller for fixing and image fixing apparatus using roller for fixing | Masahito Omata, Kazuo Kishino, Katsuhisa Matsunaka, Yoji Tomoyuki | 2012-06-26 |
| 7598012 | Coloring compound and recording material using the same | Yasuaki Murai, Masakazu Matsumoto, Takeshi Miyazaki | 2009-10-06 |
| 4990625 | Process for synthesis of N,N-disubstituted hydrazone | Tetsuo Arita, Minoru Mabuchi, Kiyoshi Sakai | 1991-02-05 |
| 4868080 | Electrophotographic photosensitive member comprising aromatic azo pigment containing cyclic amino group | Yoshio Kashizaki | 1989-09-19 |
| 4830944 | Function separated photosensitive member having a diphenylamine derivative disazo charge generation material | Masakazu Matsumoto, Takao Takiguchi, Shozo Ishikawa | 1989-05-16 |
| 4760003 | Electrophotographic photosensitive member containing disazo compound | Masakazu Matsumoto, Takao Takiguchi, Masataka Yamashita, Shozo Ishikawa, Hajime Miyazaki | 1988-07-26 |
| 4743523 | Photosensitive member for electrophotography | Masataka Yamashita, Takao Takiguchi, Masakazu Matsumoto, Shozo Ishikawa | 1988-05-10 |
| 4735882 | Trisazo photsensitive member for electrophotography | Masataka Yamashita, Takao Takiguchi, Masakazu Matsumoto, Shozo Ishikawa | 1988-04-05 |
| 4702982 | Electrophotographic photosensitive member comprising disazo pigment | Masakazu Matsumoto, Takao Takiguchi, Masataka Yamashita, Shozo Ishikawa | 1987-10-27 |
| 4666810 | Photosensitive member for electrophotography comprising azo pigments | Masakazu Matsumoto, Takao Takiguchi, Masataka Yamashita, Shozo Ishikawa | 1987-05-19 |
| 4501808 | Recording medium and process employing a photosensitive organic film | Kiyoshi Sakai, Shozo Ishikawa, Tetsuo Arita, Minoru Mabuchi | 1985-02-26 |
| 4418133 | Disazo photoconductive material and electrophotographic photosensitive member having disazo pigment layer | Kazuharu Katagiri, Katsunori Watanabe, Shozo Ishikawa | 1983-11-29 |