Issued Patents All Time
Showing 26–30 of 30 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8331834 | Developing unit, image forming apparatus incorporating same, and process cartridge including same | Kyohta Koetsuka, Masayuki Ohsawa, Yoshiyuki Takano, Katsumi Masuda, Yoshio Hattori +2 more | 2012-12-11 |
| 8145100 | Process cartridge including developing unit and incorporated in image forming apparatus | Yushi Hirayama, Shinji Kato, Takeroh Kurenuma, Keiichi Yoshida, Shin Hasegawa +6 more | 2012-03-27 |
| 8135315 | Developer regulating member in a developing unit, process cartridge including same, and image forming apparatus incorporating same | Takamasa Ozeki, Katsumi Masuda, Yoshio Hattori, Yuji Suzuki, Kyohta Koetsuka +5 more | 2012-03-13 |
| 8023855 | Development device, process cartridge, and image forming apparatus | Yoshio Hattori, Keiichi Yoshida | 2011-09-20 |
| 7813680 | Developing device, and image forming apparatus and process cartridge comprising the same | Katsumi Masuda, Yoshio Hattori, Yuji Suzuki, Takamasa Ozeki | 2010-10-12 |