Issued Patents 2011
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8081897 | Seal member, developing device, process cartridge, and image forming apparatus | Tomohiro Kubota, Kenzo Tatsumi, Tomofumi Yoshida, Yoshihiro Kawakami, Yoshiyuki Shimizu | 2011-12-20 |
| 8019259 | Development device, process unit, and image forming apparatus | Yoshiyuki Shimizu, Osamu Saito | 2011-09-13 |
| 8019254 | Toner conveying device, process cartridge, and image forming apparatus | Kenzo Tatsumi, Koji Kato, Tomofumi Yoshida, Yoshihiro Kawakami, Yoshiyuki Shimizu +1 more | 2011-09-13 |
| 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 |