Issued Patents All Time
Showing 26–34 of 34 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4469419 | Electronic flash device | Tokuji Ishida | 1984-09-04 |
| 4458995 | Camera flash light control circuitry | Tokuji Ishida | 1984-07-10 |
| 4457611 | Photographic system for use in flash photography with a camera | Tokuji Ishida | 1984-07-03 |
| 4427278 | Flash photography system and electronic flash device for use in the system | Tokuji Ishida | 1984-01-24 |
| 4392727 | Camera exposure control devices with smoothing circuit | Masayoshi Sahara, Masaaki Nakai, Tokuji Ishida | 1983-07-12 |
| 4377774 | Electronic flash control device | — | 1983-03-22 |
| 4367023 | Camera flash light control circuitry | Tokuji Ishida | 1983-01-04 |
| 4210849 | Electronic control circuitry for terminating flash output | Mikio Naya, Yoshiharu Ohta | 1980-07-01 |
| 4199242 | Operation control circuitry for electronic flash devices | Yoshiharu Ohta | 1980-04-22 |