Issued Patents All Time
Showing 26–50 of 53 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8160476 | Latent image carrier having pairs of first and second positioning protrusions and image forming apparatus | Yoshiyuki Shimizu, Kenzo Tatsumi, Yoshihiro Kawakami, Tomohiro Kubota, Koji Kato +1 more | 2012-04-17 |
| 8135313 | Powder transport screw, and development device, process unit and image-forming apparatus comprising this powder transport screw | Hirobumi Ooyoshi, Kenzo Tatsumi, Tomohiro Kubota, Yoshiyuki Shimizu, Yoshihiro Kawakami +2 more | 2012-03-13 |
| 8135329 | Toner conveyer device, process cartridge, and image forming apparatus | Yoshiyuki Shimizu, Hirobumi Ooyoshi, Koji Kato, Kenzo Tatsumi, Yoshihiro Kawakami +1 more | 2012-03-13 |
| 8103195 | Toner agitating unit, toner hopper, process cartridge, and image forming apparatus | Hirobumi Ooyoshi, Kenzo Tatsumi, Yoshihiro Kawakami, Yoshiyuki Shimizu, 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, Hirobumi Ooyoshi, Yoshihiro Kawakami, Yoshiyuki Shimizu | 2011-12-20 |
| 8019254 | Toner conveying device, process cartridge, and image forming apparatus | Kenzo Tatsumi, Koji Kato, Hirobumi Ooyoshi, Yoshihiro Kawakami, Yoshiyuki Shimizu +1 more | 2011-09-13 |
| 7979013 | Developing device of image forming apparatus | Hirobumi Ooyoshi, Kenzo Tatsumi, Yoshihiro Kawakami, Yoshiyuki Shimizu, Tomohiro Kubota | 2011-07-12 |
| 7965958 | Developing device, process cartridge and image forming apparatus | Kenzo Tatsumi, Yoshihiro Kawakami, Yoshiyuki Shimizu, Tomohiro Kubota, Hirobumi Ooyoshi +1 more | 2011-06-21 |
| 7965957 | Developing device and image forming apparatus that uses this developing device | Tomohiro Kubota, Kenzo Tatsumi, Yoshihiro Kawakami, Yoshiyuki Shimizu, Hirobumi Ooyoshi +1 more | 2011-06-21 |
| 7945203 | Waste-toner collecting device, process cartridge, and image forming apparatus | Yoshiyuki Shimizu, Kenzo Tatsumi, Hirobumi Ooyoshi, Yoshihiro Kawakami, Tomohiro Kubota +2 more | 2011-05-17 |
| 7917077 | Waste-toner housing device, and image forming apparatus | Yoshiyuki Shimizu, Kenzo Tatsumi, Yoshihiro Kawakami, Tomohiro Kubota, Koji Kato +1 more | 2011-03-29 |
| 7890044 | Powder conveyance device, toner conveyance device, process cartridge and image forming apparatus | Yoshiyuki Shimizu, Kenzo Tatsumi, Yoshihiro Kawakami, Tomohiro Kubota, Koji Kato +1 more | 2011-02-15 |
| 7873302 | Cleaning device and image forming apparatus | Yoshihiro Kawakami, Koji Kato, Hirobumi Ooyoshi, Kenzo Tatsumi, Yoshiyuki Shimizu +1 more | 2011-01-18 |
| 7706724 | Charging-roller bearing member, process cartridge, and image forming apparatus | Yoshihiro Kawakami, Koji Kato, Hirobumi Ooyoshi, Kenzo Tatsumi, Yoshiyuki Shimizu +1 more | 2010-04-27 |
| 7676184 | Developing apparatus | Shin Murayama, Shuuichi Nakagawa, Ryuji Inoue, Yuji Nagatomo, Shintaro Yamada +2 more | 2010-03-09 |
| 7634213 | Toner collecting device, image forming unit and image forming apparatus | Yoshiyuki Shimizu, Kenzo Tatsumi, Hirobumi Ooyoshi, Shintaro Yamada | 2009-12-15 |
| 7623821 | Conveyor device, process cartridge, image forming apparatus, and method of forming image | Tomohiro Kubota, Yoshiyuki Shimizu, Kenzo Tatsumi, Yoshihiro Kawakami, Hirobumi Ooyoshi +1 more | 2009-11-24 |
| D603450 | Process cartridge for image forming apparatus | Kenzo Tatsumi, Yoshihiro Kawakami, Yoshiyuki Shimizu, Tomohiro Kubota, Koji Kato +1 more | 2009-11-03 |
| D597129 | Process cartridge for image forming apparatus | Kenzo Tatsumi, Yoshihiro Kawakami, Yoshiyuki Shimizu, Tomohiro Kubota, Koji Kato +1 more | 2009-07-28 |
| D590012 | Process cartridge for image forming apparatus | Kenzo Tatsumi, Yoshihiro Kawakami, Yoshiyuki Shimizu, Tomohiro Kubota, Koji Kato +1 more | 2009-04-07 |
| D590011 | Process cartridge for image forming apparatus | Kenzo Tatsumi, Yoshihiro Kawakami, Yoshiyuki Shimizu, Tomohiro Kubota, Koji Kato +1 more | 2009-04-07 |
| D580968 | Process cartridge for image forming apparatus | Kenzo Tatsumi, Yoshihiro Kawakami, Yoshiyuki Shimizu, Tomohiro Kubota, Koji Kato +1 more | 2008-11-18 |
| 7434161 | Document registration system, method thereof, program thereof and storage medium thereof | Shinji Todaka, Naoyuki Matsumoto, Masashi Yahara, Yasunori Satake | 2008-10-07 |
| 7428394 | Electronic color photography apparatus | Kazuhiro Wakamatsu, Masahiko Saito, Yasuhiro Kiyono, Shunichi Oohara | 2008-09-23 |