Issued Patents All Time
Showing 26–45 of 45 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7979013 | Developing device of image forming apparatus | Tomofumi Yoshida, 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, 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, Yoshiyuki Shimizu, Tomofumi Yoshida +1 more | 2011-06-21 |
| 7945203 | Waste-toner collecting device, process cartridge, and image forming apparatus | Yoshiyuki Shimizu, Kenzo Tatsumi, Yoshihiro Kawakami, Tomofumi Yoshida, 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, Tomofumi Yoshida, Kenzo Tatsumi, Yoshiyuki Shimizu +1 more | 2011-01-18 |
| 7706724 | Charging-roller bearing member, process cartridge, and image forming apparatus | Yoshihiro Kawakami, Koji Kato, Tomofumi Yoshida, 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 | Tomofumi Yoshida, Yoshiyuki Shimizu, Kenzo Tatsumi, 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, Tomofumi Yoshida +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 |
| 7502579 | Developing device using developer of particular properties suitable therefore | Hiroyuki Mabuchi, Masayoshi Nakayama | 2009-03-10 |
| D580968 | Process cartridge for image forming apparatus | Kenzo Tatsumi, Yoshihiro Kawakami, Yoshiyuki Shimizu, Tomohiro Kubota, Koji Kato +1 more | 2008-11-18 |
| 7424263 | Toner recovery belt conveyor, process cartridge, and image forming apparatus using the same | Yoshiyuki Shimizu, Yoshihiro Kawakami, Tomohiro Kubota, Tomofumi Yoshida, Koji Kato +1 more | 2008-09-09 |
| 7272355 | Cleaning device for image forming apparatus | Takashi Suzuki, Kenji Nakamura, Yoshitaka Fujinuma, Masato Miwa | 2007-09-18 |
| 7224915 | Image forming apparatus and image forming unit | Shintaro Yamada, Kenji Asuwa, Susumu Tateyama, Tomofumi Yoshida | 2007-05-29 |