Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4731862 | Binarizing system of picture image signals | Yukio Tsuda | 1988-03-15 |
| 4667249 | Binarizing system of picture image signals | Yukio Tsuda | 1987-05-19 |
| 4544934 | Driving circuit for an electrostatic recording head | Yoshiko Yamaguchi | 1985-10-01 |