Issued Patents All Time
Showing 26–33 of 33 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7359661 | Developing method, developing device, and image forming apparatus including the developing device that minimizes deterioration of developer | Katsuhiro Aoki, Hajime Oyama, Hiromitsu Takagaki | 2008-04-15 |
| 7209685 | Developing device, image forming apparatus and process cartridge including replenishment openings | Hajime Oyama, Katsuhiro Aoki, Hiromitsu Takagaki, Yasuo Miyoshi | 2007-04-24 |
| 7181155 | Developer supplying device, developing roller, developing device, image forming apparatus and process cartridge | Katsuhiro Aoki, Hajime Oyama, Yasuo Miyoshi, Hiromitsu Takagaki | 2007-02-20 |
| 7099611 | Method and apparatus for image forming capable of reducing mechanical stresses to developers during transportation for development | Katsuhiro Aoki, Tsukuru Kai | 2006-08-29 |
| 7035575 | Developing device, image forming apparatus, and process cartridge | Katsuhiro Aoki, Hajime Oyama, Daichi Yamaguchi, Yasuo Miyoshi | 2006-04-25 |
| 6792234 | Developing device having a developer carrier including main and auxiliary magnetic poles and image forming apparatus using the same | Tsukuru Kai, Takeyoshi Sekine, Toshihiko Yamanaka | 2004-09-14 |
| 6701114 | Image forming apparatus and image forming process unit with developer carried on a developer carrier | Takeyoshi Sekine, Tsukuru Kai | 2004-03-02 |
| 6668147 | Developing device, image forming device and process unit | — | 2003-12-23 |