Issued Patents All Time
Showing 51–75 of 118 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D698387 | Powder container | Tomohiro Kubota, Sho Tsuritani, Emi Kita, Manabu Hamada, Masato Tsuji +1 more | 2014-01-28 |
| 8579875 | Packaged absorbent article | Akane Matsuo, Sachiko Ninomiya, Tsunetoshi Miura | 2013-11-12 |
| 8526849 | Process cartridge and image forming apparatus | Tomofumi Yoshida, Hirobumi Ooyoshi, Shinichi Arasawa | 2013-09-03 |
| 8493762 | Power semiconductor module and semiconductor power converter provided with the same | Gou Ninomiya, Toshiharu Obu, Kazuhiro Ueda, Shinichi Baba | 2013-07-23 |
| 8442414 | Seal member, developing device, process cartridge, and image forming apparatus | Tomohiro Kubota, Kenzo Tatsumi, Tomofumi Yoshida, Hirobumi Ooyoshi, Yoshihiro Kawakami | 2013-05-14 |
| 8275285 | Process cartridge and image forming apparatus | Yoshihiro Kawakami, Koji Kato, Hirobumi Ooyoshi, Tomofumi Yoshida, Kenzo Tatsumi +1 more | 2012-09-25 |
| 8260186 | Toner cartridge with refillable fresh and residual toner chambers, process cartridge, and method of making toner cartridge reusable | Tomohiro Kubota, Tomofumi Yoshida, Kenzo Tatsumi, Hirobumi Ooyoshi, Yoshihiro Kawakami +2 more | 2012-09-04 |
| 8208832 | Toner-collecting device and image forming apparatus | Tomofumi Yoshida, Hirobumi Ooyoshi, Kenzo Tatsumi, Yoshihiro Kawakami, Tomohiro Kubota +1 more | 2012-06-26 |
| 8189027 | Exposure unit, image forming apparatus and image forming method | Tatsuya Miyadera, Hideyuki Masumoto, Takafumi Miyazaki, Kozo Yamazaki | 2012-05-29 |
| 8160476 | Latent image carrier having pairs of first and second positioning protrusions and image forming apparatus | Kenzo Tatsumi, Yoshihiro Kawakami, Tomohiro Kubota, Koji Kato, Hirobumi Ooyoshi +1 more | 2012-04-17 |
| 8135313 | Powder transport screw, and development device, process unit and image-forming apparatus comprising this powder transport screw | Tomofumi Yoshida, Hirobumi Ooyoshi, Kenzo Tatsumi, Tomohiro Kubota, Yoshihiro Kawakami +2 more | 2012-03-13 |
| 8135329 | Toner conveyer device, process cartridge, and image forming apparatus | Tomofumi Yoshida, Hirobumi Ooyoshi, Koji Kato, Kenzo Tatsumi, Yoshihiro Kawakami +1 more | 2012-03-13 |
| 8111470 | Composite lens and method for manufacturing the same | Toshiaki Takano, Jun Murata, Kenji Inoue | 2012-02-07 |
| 8103195 | Toner agitating unit, toner hopper, process cartridge, and image forming apparatus | Tomofumi Yoshida, Hirobumi Ooyoshi, Kenzo Tatsumi, Yoshihiro Kawakami, Tomohiro Kubota +1 more | 2012-01-24 |
| 8095035 | Developing device, process unit, and image forming apparatus, with supporting members, grooves, and supported developing roller | Hirobumi Ooyoshi, Osamu Saito, Yoshihiro Kawakami, Kenzo Tatsumi, Tomohiro Kubota +1 more | 2012-01-10 |
| 8081897 | Seal member, developing device, process cartridge, and image forming apparatus | Tomohiro Kubota, Kenzo Tatsumi, Tomofumi Yoshida, Hirobumi Ooyoshi, Yoshihiro Kawakami | 2011-12-20 |
| 8052664 | Packaged absorbent article | Akane Matsuo, Sachiko Ninomiya, Tsunetoshi Miura | 2011-11-08 |
| 8019259 | Development device, process unit, and image forming apparatus | Hirobumi Ooyoshi, Osamu Saito | 2011-09-13 |
| 8019254 | Toner conveying device, process cartridge, and image forming apparatus | Kenzo Tatsumi, Koji Kato, Hirobumi Ooyoshi, Tomofumi Yoshida, Yoshihiro Kawakami +1 more | 2011-09-13 |
| 7995949 | Powder conveyance device, process unit, and image forming device | — | 2011-08-09 |
| 7979013 | Developing device of image forming apparatus | Tomofumi Yoshida, Hirobumi Ooyoshi, Kenzo Tatsumi, Yoshihiro Kawakami, Tomohiro Kubota | 2011-07-12 |
| 7965958 | Developing device, process cartridge and image forming apparatus | Kenzo Tatsumi, Yoshihiro Kawakami, Tomohiro Kubota, Hirobumi Ooyoshi, Tomofumi Yoshida +1 more | 2011-06-21 |
| 7965957 | Developing device and image forming apparatus that uses this developing device | Tomohiro Kubota, Kenzo Tatsumi, Yoshihiro Kawakami, Hirobumi Ooyoshi, Tomofumi Yoshida +1 more | 2011-06-21 |
| 7945203 | Waste-toner collecting device, process cartridge, and image forming apparatus | Kenzo Tatsumi, Hirobumi Ooyoshi, Yoshihiro Kawakami, Tomofumi Yoshida, Tomohiro Kubota +2 more | 2011-05-17 |
| 7940419 | Image forming method and apparatus for effectively positioning an image forming member | Kenzo Tatsumi | 2011-05-10 |