Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8155570 | Developing device and image forming apparatus with the same | — | 2012-04-10 |
| 8014690 | Developing unit and image forming apparatus | Takahisa Nakaue, Toyotsune Inoue, Akihiro Watanabe, Masashi Fujishima, Yukihiro Mori | 2011-09-06 |
| 7941080 | Image forming apparatus | Takahisa Nakaue, Kiyotaka Kobayashi, Yukihiro Mori | 2011-05-10 |
| 7848686 | Developing device and image forming apparatus | Toyotsune Inoue, Takahisa Nakaue, Akihiro Watanabe, Masashi Fujishima, Yukihiro Mori | 2010-12-07 |
| 7826781 | Image forming apparatus with controlled application of alternating-current bias | Masashi Fujishima, Takahisa Nakaue, Toyotsune Inoue, Akihiro Watanabe, Yukihiro Mori | 2010-11-02 |
| 7787807 | Developing unit and image forming apparatus including the same | Takahisa Nakaue | 2010-08-31 |
| 7742727 | Image forming apparatus | Takahisa Nakaue, Toyotsune Inoue, Akihiro Watanabe, Masashi Fujishima, Yukihiro Mori | 2010-06-22 |
| 7613417 | Image forming apparatus | Masashi Fujishima, Kiyotaka Kobayashi, Yukihiro Mori | 2009-11-03 |
| 7043181 | Developing apparatus and method for regulating an AC bias frequency to the developing roller | Masashi Fujishima | 2006-05-09 |
| 6917780 | Image forming apparatus that prevents attachment of toner to lateral sides of the developing roll | Yoshio Ozawa, Eiji Ochiai, Toshinori Nishimura, Masayoshi Yamada | 2005-07-12 |
| 6868240 | Method for developing in hybrid developing apparatus | Yoshio Ozawa, Toshinori Nishimura | 2005-03-15 |
| 6829448 | Image forming apparatus and image forming method | Yoshio Ozawa, Yuji Kamiyama, Toshinori Nishimura | 2004-12-07 |
| 6512909 | Image forming process and apparatus and control method thereof | Yoshio Ozawa, Eiji Ochiai | 2003-01-28 |