Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6741824 | Charging system, process cartridge and image forming apparatus | Masaki Ojima, Keiji Okano, Junichi Kato | 2004-05-25 |
| 6004710 | Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus | Noriyuki Takagi, Kazushige Nakamura | 1999-12-21 |
| 5994011 | Electrophotographic photosensitive member having specified polycarbonate-containing surface layer | — | 1999-11-30 |
| 5943541 | Image forming apparatus with extended length charge transporting layer | Shoji Amamiya | 1999-08-24 |
| 5923925 | Electrophotographic apparatus | Kazushige Nakamura, Akio Maruyama, Shoji Amamiya | 1999-07-13 |
| 5800955 | Electrophotographic photosensitive member having polycarbonate-containing surface layer | Harumi Sakoh, Shoji Amamiya, Tatsuya Ikezue | 1998-09-01 |
| 5729801 | Electrophotographic apparatus and process cartridge | Akio Maruyama, Toshihiro Kikuchi, Kazushige Nakamura, Shoji Amamiya, Hiroyuki Tanaka | 1998-03-17 |
| 5708932 | Charging system and electrophotography apparatus | Hideyuki Yano, Akio Maruyama, Yomishi Toshida, Kazushige Nakamura, Shoji Amamiya +2 more | 1998-01-13 |
| 5585214 | Electrophotographic photosensitive member having polycarbonate with end-cured glycidyl groups | Shoji Amamiya, Masaaki Yamagami | 1996-12-17 |
| 5485250 | Electrophotographic apparatus with photosensitive member having surface layer of binder resin and fluoro and/or silicon compound particles | Harumi Sakoh, Kazushige Nakamura, Shoji Amamiya, Takashige Kasuya, Haruyuki Tsuji +2 more | 1996-01-16 |
| 5480759 | Toner image transfer method | Takashige Kasuya, Tatsuya Nakamura, Tatsuhiko Chiba, Kohji Inaba | 1996-01-02 |
| 5374494 | Electrophotographic photosensitive member, electrophotographic apparatus, device unit, and facsimile machine employing the same | Harumi Sakoh | 1994-12-20 |
| 5357320 | Electrophotographic apparatus | Harumi Sakoh, Kazushige Nakamura, Shoji Amamiya, Takashige Kasuya, Haruyuki Tsuji +2 more | 1994-10-18 |
| 5008168 | Photosensitive member for electrophotography | Masaru Nakagawa, Fumio Sumino, Masaaki Hiro, Shin Nagahara | 1991-04-16 |
| 4932860 | Electrophotographic photosensitive member | Toshiyuki Yoshihara, Masaaki Hiro, Yoichi Kawamorita, Masaru Nakagawa, Fumio Sumino +2 more | 1990-06-12 |
| 4910536 | Electrophotographic photosensitive member, electrophotographic apparatus and process for forming an electrophotographic image using laser and special organic photoconductor | Naoto Fujimura, Masami Okunuki, Teigo Sakakibara | 1990-03-20 |
| 4877701 | Photosensitive member for electrophotography | Masaaki Hiro, Tomohiro Kimura, Hisami Tanaka, Shigemori Tanaka, Hitoshi Tohma +1 more | 1989-10-31 |