Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4912495 | Light measuring device | Masanori Ishikawa, Akira Yamada, Masao Shimizu, Yoshihiko Aihara | 1990-03-27 |
| 4870443 | Photometric device | Shingo Hayakawa | 1989-09-26 |
| 4786935 | Light measuring device | Shingo Hayakawa, Masanori Ishikawa | 1988-11-22 |
| 4782357 | Light measuring device for camera | Shingo Hayakawa | 1988-11-01 |
| 4777427 | Driving device for electro-luminescence | — | 1988-10-11 |
| 4774401 | Light measuring device variably controlled according to focus mode selection | Akira Yamada, Yoshihiko Aihara, Shingo Hayakawa | 1988-09-27 |
| 4740687 | Light pulse detecting device with improved response characteristic utilizing cascode-connected light sensitive device | — | 1988-04-26 |
| 4721976 | AE lock device for camera | Yoshihiko Aihara, Akira Yamada | 1988-01-26 |
| 4619512 | AD conversion device for camera | — | 1986-10-28 |