Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4521504 | Composite photosensitive material for use in electrophotography | Seiitj Sakuma | 1985-06-04 |
| 4413899 | Copying method and apparatus | Fuyuhiko Matsumoto, Shuichi Tsushima, Masatoshi Saitou, Tsutomu Ishida, Kunihiko Ikeda +2 more | 1983-11-08 |
| 4351604 | Multi-color electrostatic copying apparatus | Fuyuhiko Matsumoto, Kunihiko Ikeda, Shuichi Tsushima | 1982-09-28 |
| 4308821 | Electrophotographic development apparatus | Fuyuhiko Matsumoto | 1982-01-05 |