Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8249489 | Developing unit and image forming device | Hiroyuki Hamakawa, Akihiro Watanabe, Masashi Fujishima, Hiroshi Yamazaki, Sayo Uemura | 2012-08-21 |
| 8175503 | Developing device and image forming apparatus with intermediate roller for assuring efficient circulation of developer | Hiroyuki Hamakawa | 2012-05-08 |
| 8112020 | Developing device and image-forming apparatus | Sayo Mabuchi, Hiroyuki Hamakawa, Akihiro Watanabe, Masashi Fujishima, Hiroshi Yamazaki | 2012-02-07 |
| 8010025 | Developing unit and image forming device | Hiroyuki Hamakawa, Akihiro Watanabe, Masashi Fujishima, Hiroshi Yamazaki, Sayo Uemura | 2011-08-30 |
| 7826782 | Developing device and image forming apparatus | Hiroyuki Hamakawa, Akihiro Watanabe, Masashi Fujishima, Hiroshi Yamazaki, Sayo Uemura | 2010-11-02 |
| 7647001 | Developing device and image forming device equipped with same | Eiji Nimura | 2010-01-12 |
| 7555247 | Toner conveying device, developing device, and image forming device having the same | Koji Suenami, Hiroyuki Hamakawa, Takaaki Kamei, Yoshihiro Yamagishi, Eiji Nimura +1 more | 2009-06-30 |
| 7542696 | Developing device and image forming device equipped with same | Eiji Nimura | 2009-06-02 |
| 7421233 | Developing device and image forming apparatus | Yoshihiro Yamagishi, Eiji Nimura, Takaaki Kamei, Koji Suenami | 2008-09-02 |