Issued Patents All Time
Showing 1–25 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11409227 | Drum unit, cartridge, electrophotographic image forming apparatus and coupling member | Tetsuo Uesugi, Masato Tanabe, Tomonori Mori, Daisuke Abe, Tadayuki Tsuda | 2022-08-09 |
| 11378914 | Process cartridge and image forming apparatus | Tsuyoshi Ogawa, Tomonori Mori, Daisuke Abe, Noriyuki Komatsu, Tadayuki Tsuda | 2022-07-05 |
| 11067942 | Drum unit, cartridge, electrophotographic image forming apparatus and coupling member | Tetsuo Uesugi, Masato Tanabe, Tomonori Mori, Daisuke Abe, Tadayuki Tsuda | 2021-07-20 |
| 10948872 | Process cartridge and image forming apparatus having an electrical contact portion mounted on a projection and electrically connected to a storing portion | Tsuyoshi Ogawa, Tomonori Mori, Daisuke Abe, Noriyuki Komatsu, Tadayuki Tsuda | 2021-03-16 |
| 10671013 | Drum unit, cartridge, electrophotographic image forming apparatus and coupling member | Tetsuo Uesugi, Masato Tanabe, Tomonori Mori, Daisuke Abe, Tadayuki Tsuda | 2020-06-02 |
| 7519311 | Developing apparatus, process cartridge, image forming apparatus, and assemblying method for developing apparatus | Ryuta Murakami | 2009-04-14 |
| 7239823 | Electrophotographic image forming apparatus, process cartridge and discharge preventing mechanism | Toru Oguma, Takeshi Sugita | 2007-07-03 |
| 7228086 | Electrophotographic image forming apparatus having process cartridge with electrical contacts | Takeshi Kubota | 2007-06-05 |
| 7209676 | Electrophotographic image forming apparatus, cartridge and process cartridge | Akiyoshi Yokoi, Noriaki Tanaka | 2007-04-24 |
| 7200347 | Electrophotographic image forming apparatus, cartridge and process cartridge | Akiyoshi Yokoi, Noriaki Tanaka | 2007-04-03 |
| 7174113 | Process cartridge and electrophotographic image forming apparatus | Takeshi Kubota | 2007-02-06 |
| 7085509 | Process cartridge and electrophotographic image forming apparatus | Takeshi Kubota | 2006-08-01 |
| 7062192 | Electrophotographic image forming apparatus, process cartridge and discharge preventing mechanism | Toru Oguma, Takeshi Sugita | 2006-06-13 |
| 6311026 | Process cartridge and image forming apparatus including means for detecting mounting of the process cartridge to main body of image forming apparatus, and process cartridge and developer cartridge including positioning portion | Akira Higeta | 2001-10-30 |
| 6272300 | Remanufacturing method for process cartridge, process cartridge and image forming apparatus | Yasuo Fujiwara, Hiroaki Miyake, Yoshiya Nomura, Kenji Matsuda | 2001-08-07 |
| 6236822 | Shutter and process cartridge | — | 2001-05-22 |
| 6205304 | Developing apparatus | — | 2001-03-20 |
| 6047153 | Toner container, process cartridge, and image forming apparatus | — | 2000-04-04 |
| 5953562 | Process cartridge, assembling method for process cartridge and grounding member | Kanji Yokomori | 1999-09-14 |
| 5907751 | Process cartridge with mounting projections and image forming apparatus using such a process cartridge | Yoshiya Nomura | 1999-05-25 |
| 5899607 | Developing device provided with a plurality of developer conveying members | Kanji Yokomori | 1999-05-04 |
| 5867751 | Process cartridge detachably mountable to an image forming apparatus having an improved arrangement of voltage applying members | Yoshiya Nomura, Yoshinori Sugiura, Hiroaki Miyake, Kenji Matsuda | 1999-02-02 |
| 5825472 | Photosensitive drum, process cartridge and image forming apparatus | Ryuji Araki, Yoshinori Sugiura, Hiroaki Miyake, Yoshiya Nomura, Kenji Matsuda +1 more | 1998-10-20 |
| 5697022 | Process cartridge, image forming apparatus usable therewith and process cartridge assembling method | Kenji Matsuda, Yoshinori Sugiura, Hiroaki Miyake, Yoshiya Nomura | 1997-12-09 |
| 5678139 | Process cartridge with shutter for protecting photosensitive drum | Yoshiya Nomura, Yoshinori Sugiura, Chitose Tenpaku, Hiroaki Miyake, Kenji Matsuda | 1997-10-14 |