Issued Patents All Time
Showing 51–65 of 65 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6265122 | Electrophotographic photoreceptor and an image forming apparatus and a process cartridge using the same | Tomoo Sakimura, Takeo Oshiba, Yohko Kitahara, Masahiko Kurachi, Kazuhisa Shida | 2001-07-24 |
| 6258499 | Electrophotographic photoreceptor, an image forming method, an image forming apparatus, and an apparatus unit | — | 2001-07-10 |
| 6203962 | Electrophotographic image forming method, electrophotographic image forming apparatus, and processing cartridge and electrophotographic photoreceptor used therein | Takeo Oshiba, Tomoo Sakimura, Yohko Kitahara, Masahiko Kurachi, Kazuhisa Shida | 2001-03-20 |
| 6143452 | Electrophotographic photoreceptor | Tomoo Sakimura, Kazumasa Watanabe, Shingo Fujimoto, Toyoko Shibata, Tomoko Sakimura | 2000-11-07 |
| 5981125 | Electrophotographic photoreceptor, and an image-forming apparatus and method of using the same | — | 1999-11-09 |
| 5891599 | Electrophotographic photoreceptor | Shingo Fujimoto, Tomoo Sakimura | 1999-04-06 |
| 5804345 | Photoreceptor for electrophotography | Mieko Toyama, Masaru Sano | 1998-09-08 |
| 5753395 | Electrophotographic photoreceptor | Akira Kinoshita, Naohiro Hirose, Kazumasa Watanabe | 1998-05-19 |
| 5721085 | Electrophotographic image forming method | Takeo Oshiba, Katsumi Matsuura | 1998-02-24 |
| 5679488 | Electrophotography photoreceptor | Yoshiaki Takei, Chikusa Fukumoto, Takeo Oshiba, Yoshihiko Etoh | 1997-10-21 |
| 5354635 | Electrophotographic photoreceptor comprising mixed crystals of titanylphthalocyanine and vanadylphthalocyanine | Kazumasa Watanabe | 1994-10-11 |
| 5234785 | Electrophotographic photoreceptor and manufacturing method thereof | Akira Kinoshita, Kazumasa Watanabe | 1993-08-10 |
| 5215840 | Electrophotographic photoreceptor and manufacturing method thereof | Akira Kinoshita, Kazumasa Watanabe | 1993-06-01 |
| 5039586 | Electrophotographic photoreceptor | Akira Kinoshita, Naohiro Hirose, Kazumasa Watanabe, Kiyoshi Sawada | 1991-08-13 |
| 4994339 | Electrophotographic photoreceptor using titanyl phthalocyanine | Akira Kinoshita, Kazumasa Watanable, Naohiro Hirose, Kiyoshi Sawada | 1991-02-19 |