Issued Patents All Time
Showing 26–33 of 33 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7826781 | Image forming apparatus with controlled application of alternating-current bias | Shoichi Sakata, Takahisa Nakaue, Toyotsune Inoue, Akihiro Watanabe, Yukihiro Mori | 2010-11-02 |
| 7826782 | Developing device and image forming apparatus | Asami Kotera, Hiroyuki Hamakawa, Akihiro Watanabe, Hiroshi Yamazaki, Sayo Uemura | 2010-11-02 |
| 7773921 | Image forming apparatus with toner collecting roller | Kiyotaka Kobayashi, Yuki Matsui, Yukihiro Mori, Sayo Uemura, Akihiro Watanabe | 2010-08-10 |
| 7742727 | Image forming apparatus | Shoichi Sakata, Takahisa Nakaue, Toyotsune Inoue, Akihiro Watanabe, Yukihiro Mori | 2010-06-22 |
| 7613417 | Image forming apparatus | Shoichi Sakata, Kiyotaka Kobayashi, Yukihiro Mori | 2009-11-03 |
| 7043181 | Developing apparatus and method for regulating an AC bias frequency to the developing roller | Shoichi Sakata | 2006-05-09 |
| 6879794 | Image forming apparatus | Jun Azuma, Ayako Yashima, Yukimasa Watanabe, Keisuke Oba, Takashi Nagashima | 2005-04-12 |
| 6266499 | Transfer method for electrophotographic apparatus | Takahiko Murata, Masanobu Maeshima | 2001-07-24 |