Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4533234 | Automatic density control method for a photocopying machine | Yuji Watai, Yoshiyuki Hirayama, Akira Matsuura | 1985-08-06 |
| 4460270 | Automatic exposure control for a photocopying machine | Yuji Watai, Toshiyuki Kitamura, Yoshiyuki Hirayama, Akira Matsuura | 1984-07-17 |