Issued Patents All Time
Showing 76–87 of 87 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7945203 | Waste-toner collecting device, process cartridge, and image forming apparatus | Yoshiyuki Shimizu, Kenzo Tatsumi, Hirobumi Ooyoshi, Yoshihiro Kawakami, Tomofumi Yoshida +2 more | 2011-05-17 |
| 7917077 | Waste-toner housing device, and image forming apparatus | Yoshiyuki Shimizu, Kenzo Tatsumi, Yoshihiro Kawakami, Koji Kato, Hirobumi Ooyoshi +1 more | 2011-03-29 |
| 7890044 | Powder conveyance device, toner conveyance device, process cartridge and image forming apparatus | Yoshiyuki Shimizu, Kenzo Tatsumi, Yoshihiro Kawakami, Koji Kato, Hirobumi Ooyoshi +1 more | 2011-02-15 |
| 7873302 | Cleaning device and image forming apparatus | Yoshihiro Kawakami, Koji Kato, Hirobumi Ooyoshi, Tomofumi Yoshida, Kenzo Tatsumi +1 more | 2011-01-18 |
| 7706724 | Charging-roller bearing member, process cartridge, and image forming apparatus | Yoshihiro Kawakami, Koji Kato, Hirobumi Ooyoshi, Tomofumi Yoshida, Kenzo Tatsumi +1 more | 2010-04-27 |
| 7623821 | Conveyor device, process cartridge, image forming apparatus, and method of forming image | Yoshiyuki Shimizu, Kenzo Tatsumi, Yoshihiro Kawakami, Tomofumi Yoshida, Hirobumi Ooyoshi +1 more | 2009-11-24 |
| D603450 | Process cartridge for image forming apparatus | Kenzo Tatsumi, Yoshihiro Kawakami, Yoshiyuki Shimizu, Koji Kato, Hirobumi Ooyoshi +1 more | 2009-11-03 |
| D597129 | Process cartridge for image forming apparatus | Kenzo Tatsumi, Yoshihiro Kawakami, Yoshiyuki Shimizu, Koji Kato, Hirobumi Ooyoshi +1 more | 2009-07-28 |
| D590012 | Process cartridge for image forming apparatus | Kenzo Tatsumi, Yoshihiro Kawakami, Yoshiyuki Shimizu, Koji Kato, Hirobumi Ooyoshi +1 more | 2009-04-07 |
| D590011 | Process cartridge for image forming apparatus | Kenzo Tatsumi, Yoshihiro Kawakami, Yoshiyuki Shimizu, Koji Kato, Hirobumi Ooyoshi +1 more | 2009-04-07 |
| D580968 | Process cartridge for image forming apparatus | Kenzo Tatsumi, Yoshihiro Kawakami, Yoshiyuki Shimizu, Koji Kato, Hirobumi Ooyoshi +1 more | 2008-11-18 |
| 7424263 | Toner recovery belt conveyor, process cartridge, and image forming apparatus using the same | Yoshiyuki Shimizu, Yoshihiro Kawakami, Hirobumi Ooyoshi, Tomofumi Yoshida, Koji Kato +1 more | 2008-09-09 |