Issued Patents All Time
Showing 1–25 of 55 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8036543 | Developing apparatus, process cartridge and image forming apparatus | Yuuki Nakamura | 2011-10-11 |
| 7340197 | Process cartridge, mounting mechanism therefor and electrophotographic image forming apparatus | Kazunari Murayama, Susumu Nittani, Hideki Maeshima | 2008-03-04 |
| 7272339 | Process cartridge including first and second frames and separating member moving the second frame to a separated position and image forming apparatus detachably mounting the cartridge | Masatomo Tsuzuki, Susumu Nittani | 2007-09-18 |
| 7215909 | Developing device, and process cartridge maintaining position of developing roller, and image forming apparatus using these | Susumu Nittani, Masatomo Tsuduki | 2007-05-08 |
| 7162181 | Remanufacturing method for process cartridge | Hideki Maeshima, Kazunari Murayama, Susumu Nittani, Nobuharu Hoshi, Tatsuya Suzuki | 2007-01-09 |
| 7158735 | Process cartridge, mounting method of electrophotographic photosensitive drum and replacing method of the photosensitive drum | Kazunari Murayama, Hideki Maeshima | 2007-01-02 |
| 7146115 | Image forming apparatus and developing-agent amount detecting method, cartridge, and storage medium | Tatsuya Suzuki, Nobuharu Hoshi | 2006-12-05 |
| 7072603 | Process cartridge and holding member | Masatomo Tsuzuki, Susumu Nittani, Tatsuya Suzuki, Hideki Maeshima | 2006-07-04 |
| 7039339 | Process cartridge and electrophotographic image forming apparatus | Takeshi Arimitsu | 2006-05-02 |
| D519150 | Image forming apparatus | Hisayoshi Kojima, Kazunari Murayama, Nobuharu Hoshi, Tatsuya Suzuki, Hideki Maeshima +2 more | 2006-04-18 |
| 7024134 | Rigid process cartridge and electrophotographic image forming apparatus incorporating the same | Shinjiro Toba, Hideki Maeshima | 2006-04-04 |
| 7024137 | Developing device, developing cartridge, and process cartridge each urging developing roller into regulating portion, and image forming apparatus having such developing device or process cartridge | Susumu Nittani, Masatomo Tsuduki | 2006-04-04 |
| 7016626 | Electrophotographic photosensitive drum having caulked flanges, process cartridge having such a drum, and image forming apparatus having such a process cartridge | Kojiro Yasui, Tachio Kawai | 2006-03-21 |
| 6980758 | Process cartridge, mounting mechanism therefor and electrophotographic image forming apparatus | Kazunari Murayama, Susumu Nittani, Hideki Maeshima | 2005-12-27 |
| 6934489 | Process cartridge and electrophotographic image forming apparatus | Takeshi Arimitsu | 2005-08-23 |
| 6834171 | DEVELOPER CONTAINER HAVING A GRIP MEMBER, PROCESS CARTRIDGE MOUNTABLE TO AN IMAGE FORMING APPARATUS HAVING SUCH A DEVELOPER CONTAINER, AN IMAGE FORMING APPARATUS DETACHABLY MOUNTING A PROCESS CARTRIDGE HAVING SUCH A DEVELOPER CONTAINER, A BEARING STRUCTURE HAVING A GRIP MEMBER, AND A SIDE COVER HAVING A GRIP MEMBER | Susumu Nittani, Koji Hashimoto | 2004-12-21 |
| 6738588 | Image forming apparatus and process cartridge detachably attachable to the same | Tachio Kawai | 2004-05-18 |
| 6684041 | Process cartridge, electrophotographic photosensitive drum, electrophotographic image forming apparatus and color electrophotographic image forming apparatus | Takeshi Arimitsu | 2004-01-27 |
| 6654575 | Developer container having sealing member | Toshihiko Miura, Masatoshi Kato | 2003-11-25 |
| D474497 | Image forming apparatus | Tachio Kawai, Jun Miyamoto, Tadashi Horikawa, Takeshi Arimitsu, Koji Hashimoto +1 more | 2003-05-13 |
| D474232 | Image forming apparatus | Tachio Kawai, Jun Miyamoto, Tadashi Horikawa, Takeshi Arimitsu, Koji Hashimoto +1 more | 2003-05-06 |
| 6535709 | Developing apparatus featuring an end of a regulating member coupled to a supporting member of the apparatus, regulating member, and method for assembling the same | Takeshi Arimitsu, Susumu Nittani | 2003-03-18 |
| 6480687 | Process cartridge, handle attaching method and electrophotographic image forming apparatus | Tachio Kawai | 2002-11-12 |
| 6463232 | Handle, process cartridge, handle attaching method and electrophotographic image forming apparatus | Tachio Kawai | 2002-10-08 |
| 6463234 | Process cartridge and electrophotographic image forming apparatus | Takeshi Arimitsu, Susumu Nittani | 2002-10-08 |