Issued Patents All Time
Showing 1–24 of 24 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5028966 | Image-forming machine | Shigeo Koyama, Eiji Tsutsui | 1991-07-02 |
| 5005053 | Image-forming machine having a process assembly comprising two independently movable units | — | 1991-04-02 |
| 4792824 | Electrostatic copying apparatus having reduced size and complexity | — | 1988-12-20 |
| 4640604 | Electrostatic photographic copying machine provided with a movable sorter | Shigeo Koyama, Atsushi Kano | 1987-02-03 |
| 4585324 | Shell-type electrostatic copying apparatus | Shigeo Koyama, Atsushi Kano | 1986-04-29 |
| 4582418 | Variable magnification electrostatic copying apparatus | Hiromi Sakata, Atsushi Kano, Shigeo Koyama | 1986-04-15 |
| 4576464 | Charge eliminating lamp device | Hiromi Sakata, Hiroshi Hiraoka | 1986-03-18 |
| 4511241 | Copying apparatus | Hideaki Tsudaka, Takaji Washio, Masahide Iseki, Toshio Watanabe, Masami Kai +2 more | 1985-04-16 |
| 4484734 | Copy paper feeding device for a copying apparatus | Hideaki Tsudaka, Takaji Washio, Masahide Iseki, Toshio Watanabe, Masami Kai +2 more | 1984-11-27 |
| 4477173 | Toner replenishing device for an electrostatic copying apparatus | Shigeo Koyama, Masami Kai, Ichiro Takahashi, Hiromi Sakata, Atsushi Kano | 1984-10-16 |
| 4468111 | Developing device for use on an electrostatic copying apparatus | Ryutaro Yamagata, Hitoshi Nishihama, Shigeo Koyama, Kazutada Sakai | 1984-08-28 |
| 4452530 | Copying apparatus equipped with an original-support device, and an original-holding mechanism therefor | Shigeo Koyama, Ryutaro Yamagata, Hiromi Sakato | 1984-06-05 |
| 4444494 | Copying apparatus equipped with an original-support device, and an original-holding mechanism therefor | Shigeo Koyama, Ryutaro Yamagata, Hiromi Sakata | 1984-04-24 |
| 4436412 | Cleaning device for use on an electrostatic copying apparatus | Ryutaro Yamagata, Hitoshi Nishihama, Shigeo Koyama, Kazutada Sakai | 1984-03-13 |
| 4410259 | Apparatus for developing latent electrostatic image | Ryutaro Yamagata, Hitoshi Nishihama, Shigeo Koyama, Kazutada Sakai | 1983-10-18 |
| 4400077 | Photosensitive drum for electrostatic copying apparatus | Ryutaro Yamagata, Shigeo Koyama, Hiromi Sakata, Atsushi Kano | 1983-08-23 |
| 4387889 | Copying apparatus provided with a cassette-type paper feeding mechanism | Shigeo Koyama, Ryutaro Yamagata, Hiromi Sakata | 1983-06-14 |
| 4380579 | Electrostatic copying process and apparatus | Shoji Matsumoto, Toshikazu Matsui, Toshimitsu Ikeda, Hitoshi Nishihama, Tatsuo Aizawa | 1983-04-19 |
| 4314018 | Cleaning process for an electrostatic copying apparatus | Shoji Matsumoto, Toshikazu Matsui, Toshimitsu Ikeda, Hitoshi Nishihama, Tatsuo Aizawa | 1982-02-02 |
| 4286861 | Electrostatic copying process and apparatus | Shoji Matsumoto, Toshikazu Matsui, Toshimitsu Ikeda, Hitoshi Nishihama, Tatsuo Aizawa | 1981-09-01 |
| 4260238 | Transfer type electrostatic copying apparatus | Toru Nakazawa | 1981-04-07 |
| 4259008 | Electrostatic copying apparatus | Ryutaro Yamagata, Sohei Matsuo, Shigeo Koyama, Yasusuke Tohi, Tatsuo Aizawa | 1981-03-31 |
| 4254202 | Electrostatic copying process | Shoji Matsumoto, Toshikazu Matsui, Toshimitsu Ikeda, Hitoshi Nishihama, Tatsuo Aizawa | 1981-03-03 |
| 4233386 | Method of removing residual toner from surface of photoconductive member for use in electrostatic copying apparatus of the transfer type | Tatsuo Aizawa, Yuji Hasegawa | 1980-11-11 |