Issued Patents All Time
Showing 26–28 of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4400077 | Photosensitive drum for electrostatic copying apparatus | Nobuhiko Kozuka, Ryutaro Yamagata, Hiromi Sakata, Atsushi Kano | 1983-08-23 |
| 4387889 | Copying apparatus provided with a cassette-type paper feeding mechanism | Ryutaro Yamagata, Nobuhiko Kozuka, Hiromi Sakata | 1983-06-14 |
| 4259008 | Electrostatic copying apparatus | Ryutaro Yamagata, Sohei Matsuo, Nobuhiko Kozuka, Yasusuke Tohi, Tatsuo Aizawa | 1981-03-31 |