Issued Patents All Time
Showing 1–25 of 84 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7920806 | Coupling part, photosensitive drum, process cartridge and electrophotographic image forming apparatus | Shinya Noda, Shinichi Sasaki, Akihiro Toma, Kazushi Watanabe, Akira Higeta | 2011-04-05 |
| 7660545 | Coupling part, photosensitive drum, process cartridge and electrophotographic image forming apparatus | Shinya Noda, Shinichi Sasaki, Akihiro Toma, Kazushi Watanabe, Akira Higeta | 2010-02-09 |
| 7630661 | Coupling part, photosensitive drum, process cartridge and electrophotographic image forming apparatus | Shinya Noda, Shinichi Sasaki, Akihiro Toma, Kazushi Watanabe, Akira Higeta | 2009-12-08 |
| 7489885 | Coupling part, photosensitive drum, process cartridge and electrophotographic image forming apparatus | Shinya Noda, Shinichi Sasaki, Akihiro Toma, Kazushi Watanabe, Akira Higeta | 2009-02-10 |
| 7403733 | Coupling part, photosensitive drum, process cartridge and electrophotographic image forming apparatus | Kazushi Watanabe | 2008-07-22 |
| 7231161 | Coupling part, photosensitive drum, process cartridge and electrophotographic image forming apparatus | Shinya Noda, Shinichi Sasaki, Akihiro Toma, Kazushi Watanabe, Akira Higeta | 2007-06-12 |
| 7092655 | Coupling part, photosensitive drum, process cartridge and electrophotographic image forming apparatus | Shinya Noda, Shinichi Sasaki, Akihiro Toma, Kazushi Watanabe, Akira Higeta | 2006-08-15 |
| 6999696 | Coupling part, photosensitive drum, process cartridge and electrophotographic image forming apparatus | Shinya Noda, Shinichi Sasaki, Akihiro Toma, Kazushi Watanabe, Akira Higeta | 2006-02-14 |
| 6400914 | Coupling part, photosensitive drum, process cartridge and electrophotographic image forming apparatus | Shinya Noda, Shinichi Sasaki, Akihiro Toma, Kazushi Watanabe, Akira Higeta | 2002-06-04 |
| 6397018 | Developer amount detecting method, developing device, process cartridge and electrophotographic image forming apparatus | Hideki Matsumoto, Kazushige Sakurai, Kazushi Watanabe, Toshiyuki Karakama | 2002-05-28 |
| 6330402 | Developer amount indicating method, electrophotographic image forming apparatus and process cartridge | Kazushige Sakurai, Kazushi Watanabe, Toshiyuki Karakama, Hideki Matsumoto | 2001-12-11 |
| 6330409 | Process cartridge and electrophotographic image forming apparatus | Kazushi Watanabe, Atsushi Numagami, Katsunori Yokoyama | 2001-12-11 |
| 6324363 | Process cartridge and electrophotographic image forming apparatus | Kazushi Watanabe, Tadayuki Tsuda, Shinichi Sasaki | 2001-11-27 |
| 6201935 | Electrophotographic image forming apparatus, electrophotographic image forming system, and process cartridge | Ichiro Terada, Shinichi Sasaki, Yoshiya Nomura, Shinya Noda | 2001-03-13 |
| 6169866 | Process cartridge and electrophotographic image forming apparatus | Kazushi Watanabe, Atsushi Numagami, Katsunori Yokoyama | 2001-01-02 |
| 6160976 | Developing device having magnetic seals | Toshiyuki Karakama, Kazushi Watanabe | 2000-12-12 |
| 6118961 | Detachable two-frame process cartridge for an image forming apparatus | Yoshiya Nomura, Tadayuki Tsuda, Shinichi Sasaki, Kazushi Watanabe, Hiroyuki Shirai +1 more | 2000-09-12 |
| 6101348 | Developing unit, process cartridge and electrophotographic image forming apparatus | Fumito Nonaka, Akira Higeta, Yoshiyuki Batori | 2000-08-08 |
| 6075957 | Process cartridge and electrophotographic image forming apparatus | Yoshiyuki Batori, Minoru Sato | 2000-06-13 |
| 6070028 | Process cartridge, electrophotographic image forming apparatus and coupling therebetween | Kazuyoshi Odagawa, Shinichi Sasaki, Kazushi Watanabe, Toshiyuki Karakama | 2000-05-30 |
| 6058278 | Toner container, process cartridge and electrophotographic image forming apparatus | Tadayuki Tsuda, Kazuyoshi Odagawa, Atsushi Kubota, Norio Hikake, Shinichi Sasaki | 2000-05-02 |
| 6029032 | Process cartridge and electrophotographic image forming apparatus | Kazushi Watanabe, Atsushi Numagami, Katsunori Yokoyama | 2000-02-22 |
| 6006058 | Process cartridge and electrophotographic image forming apparatus having an improved driving system | Kazushi Watanabe, Tadayuki Tsuda, Shinichi Sasaki, Atsushi Numagami, Katsunori Yokoyama | 1999-12-21 |
| 5987278 | Process cartridge and image forming apparatus usable therewith | Yoshiya Nomura, Tadayuki Tsuda, Shinichi Sasaki, Kazushi Watanabe, Hiroyuki Shirai +1 more | 1999-11-16 |
| 5966566 | Recycle method for process cartridge and image forming apparatus | Kazuyoshi Odagawa, Hiroo Kobayashi, Masahiko Yashiro, Toshiyuki Karakama, Atsushi Numagami +2 more | 1999-10-12 |