Issued Patents All Time
Showing 25 most recent of 32 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6942952 | Electrophotgraphic photosensitive member, process cartridge, and electrophotgraphic apparatus | Hirotoshi Uesugi, Itaru Yamazaki, Kazushige Nakamura, Akira Yoshida | 2005-09-13 |
| 6773856 | Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus | Masato Tanaka, Hidetoshi Hirano, Atsushi Fujii, Ryuji Higashi | 2004-08-10 |
| 6465143 | Electrophotographic photosensitive member, process cartridge and electrophotographic apparatus | Masato Tanaka, Hidetoshi Hirano, Kan Tanabe, Kazue Asakura, Atsushi Fujii | 2002-10-15 |
| 6395441 | Electrophotographic photosensitive member, process cartridge and electrophotographic apparatus | Hirotoshi Uesugi | 2002-05-28 |
| 6245473 | Electrophotographic apparatus with DC contact charging and photosensitive layer with polycarbonate resin in charge generation layer | Toshiyuki Yoshihara, Itaru Yamazaki, Hideyuki Ainoya, Hidetoshi Hirano, Mayumi Kimura | 2001-06-12 |
| 6203954 | Electrophotographic photosensitive member process cartridge and electrophotographic apparatus | — | 2001-03-20 |
| 6180302 | Electrophotographic photosensitive member, and process cartridge and electrophotographic apparatus provided with the electrophotographic member | Takakazu Tanaka, Tetsuro Fukui, Hidetoshi Hirano | 2001-01-30 |
| 6146800 | Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus | Akira Yoshida | 2000-11-14 |
| 6110628 | Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus | Michiyo Sekiya, Akio Maruyama, Shoji Amamiya, Hiroki Uematsu, Hiroyuki Tanaka | 2000-08-29 |
| 6093515 | Electrophotographic photosensitive member, process cartridge and electrophotographic apparatus | Akira Yoshida | 2000-07-25 |
| 6016414 | Electrophotographic photosensitive member, electrophotographic apparatus and process cartridge | Akio Maruyama, Kazushige Nakamura | 2000-01-18 |
| 5935747 | Electrophotographic photosensitive member, and process cartridge and electrophotographic apparatus having the electrophotographic photosensitive member | Hajime Miyazaki, Hidetoshi Hirano | 1999-08-10 |
| 5912098 | Electrophotographic photosensitive member and electrophotographic apparatus and process cartridge including same | Takakazu Tanaka, Akira Yoshida, Hidetoshi Hirano, Wataru Kitamura | 1999-06-15 |
| 5876888 | Electrophotographic photosensitive member, and apparatus and process cartridge provided with the same | Akira Yoshida | 1999-03-02 |
| 5610690 | Electrophotographic apparatus and process cartridge featuring an electrophotographic photosensitive member having a surface layer of lubricative fluorine-containing resin powder | Toshiyuki Yoshihara, Itaru Yamazaki, Hideyuki Ainoya, Hidetoshi Hirano, Mayumi Kimura | 1997-03-11 |
| 5595845 | Electrophotographic photosensitive member, electrophotographic apparatus including same and electrophotographic apparatus unit | Tatsuo Maeda, Yoichi Kawamorita, Hiroyuki Ohmori, Mayumi Kimura | 1997-01-21 |
| 5568242 | Electrophotographic photosensitive member, image forming apparatus and process unit having this electrophotographic photosensitive member | Hiroshi Sasame, Yoichiro Maebashi | 1996-10-22 |
| 5565289 | Electrophotographic photosensitive member, and process cartridge and electrophotographic apparatus employing the same | Toshiyuki Yoshihara, Itaru Yamazaki, Hideyuki Ainoya, Hidetoshi Hirano | 1996-10-15 |
| 5558964 | Electrophotographic photosensitive member, and electrophotographic apparatus, device unit, and facsimile machine employing the same | Toshiyuki Yoshihara, Nobuyuki Hanami, Hideyuki Takai, Hajime Miyazaki, Junichi Kishi +5 more | 1996-09-24 |
| 5538826 | Electrophotographic image forming method, apparatus and device unit | Hideyuki Ainoya, Toshiyuki Yoshihara, Itaru Yamazaki, Hidetoshi Hirano, Mayumi Kimura | 1996-07-23 |
| 5418099 | Electrophotographic photosensitive member, and electrophotographic apparatus and device unit employing the same | Shinya Mayama, Naoto Fujimura, Toshiyuki Yoshihara, Nobuyuki Hanami, Kiyoshi Sakai +3 more | 1995-05-23 |
| 5384625 | Image forming method | Toshiyuki Yoshihara, Hideyuki Ainoya, Hidetoshi Hirano | 1995-01-24 |
| 5362588 | Electrophotographic photosensitive member and apparatus including same | Toshiyuki Yoshihara, Nobuyuki Hanami, Junichi Kishi, Hideyuki Ainoya | 1994-11-08 |
| 5254423 | Electrophotographic photosensitive member, and electrophotographic apparatus, device unit and facsimile machine having the photosensitive member | Shinya Mayama, Naoto Fujimura, Toshiyuki Yoshihara, Kiyoshi Sakai, Hideyuki Ainoya +1 more | 1993-10-19 |
| 5236796 | Electrophotographic sensitive medium | Takashi Koyama, Yuichi Hashimoto | 1993-08-17 |