Issued Patents All Time
Showing 26–42 of 42 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5940664 | Agitation and charging device for an image forming apparatus | Kazuyuki Sugihara, Katsuhiro Kosuge | 1999-08-17 |
| 5850586 | Rotary developing device for an image forming apparatus | Kazuyuki Sugihara, Katsuhiro Kosuge | 1998-12-15 |
| 5826146 | Color image forming device which changes developing bias when switching between developer units | Takayuki Maruta, Hiroshi Takashima, Kazuyuki Sugihara, Shinji Kato, Katsuhiro Kosuge | 1998-10-20 |
| 5796206 | Controller and controlling method for piezoelectric actuator | Mitsuru Asai, Nobuo Kamiya, Chihiro NISHIKAWA | 1998-08-18 |
| 5787328 | Rotary developing device for an image forming apparatus | Kazuyuki Sugihara, Katsuhiro Kosuge | 1998-07-28 |
| 5768664 | Toner container for a rotary developing device | Katsuhiro Kosuge, Kazuyuki Sugihara, Shinji Kato | 1998-06-16 |
| 5765059 | Developing device for image forming apparatus and toner container therefor | Katsuhiro Kosuge, Kazuyuki Sugihara | 1998-06-09 |
| 5761576 | Image forming apparatus for supplying power to members of a rotary developing device | Kazuyuki Sugihara, Katsuhiro Kosuge | 1998-06-02 |
| 5758235 | Toner container for a rotary developing device | Katsuhiro Kosuge, Kazuyuki Sugihara, Shinji Kato | 1998-05-26 |
| 5671470 | Color image forming device which changes developing bias when switching between developer units | Takayuki Maruta, Hiroshi Takashima, Kazuyuki Sugihara, Shinji Kato, Katsuhiro Kosuge | 1997-09-23 |
| 5646721 | Image forming apparatus for supplying power to members of a rotary developing device | Kazuyuki Sugihara, Katsuhiro Kosuge | 1997-07-08 |
| 5617198 | Image forming apparatus having rotary developing device | Kazuyuki Sugihara, Katsuhiro Kosuge | 1997-04-01 |
| 5565973 | Rotary developing device for an image forming apparatus | Takatsugu Fujishiro, Hiroyuki Matsushiro, Noriyuki Kimura, Katsuhiro Aoki, Yuichi Ueno +2 more | 1996-10-15 |
| 5552877 | Image forming apparatus with controlled drive for accurately positioning developing sections of a rotary developing device | Kazuyuki Sugihara, Katsuhiro Kosuge | 1996-09-03 |
| 5416568 | Developing unit for an image forming apparatus | Shigeru Yoshiki, Seiji Oka, Tsukuru Kai | 1995-05-16 |
| 5235384 | Image forming apparatus with replaceable process units | Seiji Oka, Tsukuru Kai, Hisashi Ishijima, Makoto Obu, Hidetoshi Yano | 1993-08-10 |
| 5109254 | Developing apparatus | Seiji Oka, Tsukuru Kai, Masaru Tanaka | 1992-04-28 |