Issued Patents All Time
Showing 1–25 of 32 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7155137 | Process cartridge, developing cartridge and developing roller | Kojiro Yasui, Hiroshi Sato, Seiichi Shinohara, Yasufumi Yoshino, Syuhei Kawasaki | 2006-12-26 |
| 7110684 | Cartridge for replenishing developer including a memory device and a control system featuring the cartridge | Masahide Kinoshita, Koichi Hiroshima, Ryuichi Yoshizawa | 2006-09-19 |
| 7082276 | Information storing medium, unit, process cartridge, developing cartridge, and electrophotographic image forming apparatus | Toshiyuki Karakama, Tatsuya Shiratori, Shinji Goto, Shinya Noda, Fumito Nonaka +1 more | 2006-07-25 |
| 6983115 | Developing cartridge and process cartridge having first and second projected portions and image forming apparatus mounting such a developing cartridge | Yasufumi Yoshino, Koji Yamaguchi | 2006-01-03 |
| 6978100 | Process cartridge, developing cartridge and developing roller | Kojiro Yasui, Hiroshi Sato, Seiichi Shinohara, Yasufumi Yoshino, Syuhei Kawasaki | 2005-12-20 |
| 6839534 | Image forming apparatus and developer supply container removably mountable in image forming apparatus | Kenji Matsuda, Hisayoshi Kojima, Takashi Yahagi | 2005-01-04 |
| 6826380 | Information storing medium, unit, process cartridge, developing cartridge, and electrophotographic image forming apparatus | Toshiyuki Karakama, Tatsuya Shiratori, Shinji Goto, Shinya Noda, Fumito Nonaka +1 more | 2004-11-30 |
| 6782219 | Cartridge and electrophotographic image forming apparatus | Yasufumi Yoshino, Koji Yamaguchi | 2004-08-24 |
| 6754454 | Image forming apparatus capable of discriminating a service life of detachably mounted process unit | Koichi Hiroshima, Masahide Kinoshita, Ryuichi Yoshizawa | 2004-06-22 |
| 6718144 | Image forming apparatus and process unit mountable to image forming apparatus | Koichi Hiroshima, Masahide Kinoshita, Ryuichi Yoshizawa | 2004-04-06 |
| 6704521 | Image forming apparatus and image forming method | Masahide Kinoshita, Koichi Hiroshima, Ryuichi Yoshizawa | 2004-03-09 |
| D477631 | Developing cartridge | Tomonori Mori, Yasufumi Yoshino | 2003-07-22 |
| 6564029 | Cartridge having developer supply opening and image forming apparatus usable therewith | Hisayoshi Kojima, Kenji Matsuda, Takashi Yahagi | 2003-05-13 |
| 6556800 | Developer supply container and image forming apparatus capable of mounting the container thereon | Kenji Matsuda, Akiyoshi Fujita | 2003-04-29 |
| 6463233 | Process cartridge having first and second cartridge guiding portions and an electrophotographic image forming apparatus to which the process cartridge is attached | Hisayoshi Kojima, Atsushi Numagami, Kazunari Murayama, Nobuharu Hoshi | 2002-10-08 |
| 6442359 | PROCESS CARTRIDGE DETACHABLY MOUNTABLE TO A MAIN ASSEMBLY OF AN ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS COMPRISING MEANS FOR ROTATING A CHARGING UNIT IF FIRST AND SECOND ROTATIONAL DIRECTIONS AND THE APPARATUS MOUNTING SUCH A PROCESS CARTRIDGE | Atsushi Numagami, Hisayoshi Kojima, Kazunari Murayama, Nobuharu Hoshi | 2002-08-27 |
| 6418292 | Developer replenishing container with movable shutter feature, cartridge and image forming apparatus employing developer replenishing container | Kenji Matsuda, Akiyoshi Fujita | 2002-07-09 |
| 6381419 | Image forming apparatus with developer density and developer remaining amount detection features | Masahide Kinoshita, Koichi Hiroshima, Ryuichi Yoshizawa | 2002-04-30 |
| 6324370 | Electrophotographic image forming apparatus detachably mounting a developer replenishing container or in which a plurality of cartridges and developer replenishing containers are attachably and detachably positioned | Kenji Matsuda, Akiyoshi Fujita | 2001-11-27 |
| 6295429 | Image forming apparatus featuring intermittent operation of a developing unit supporting rotary member based on fixing temperature | Kazunori Kobayashi | 2001-09-25 |
| 6253043 | Developer sealing member and developing apparatus provided with the same | — | 2001-06-26 |
| 6064843 | Process cartridge and image forming apparatus | Atsushi Kubota, Yoshiya Nomura, Kanji Yokomori, Shigeo Miyabe | 2000-05-16 |
| 6064844 | Developing apparatus | Kouji Hashimoto | 2000-05-16 |
| 5995782 | Developing cartridge with mounting positioning feature and image forming apparatus using the same | Nobuharu Hoshi | 1999-11-30 |
| 5923926 | Developing device and electrophotographic image forming apparatus | Nobuharu Hoshi | 1999-07-13 |