Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4755759 | Temperature compensating method in automatic diaphragm control amplifier used with objective for CCTV camera | Masayuki Arai | 1988-07-05 |
| 4737855 | Automatic diaphragm control device for TV camera objective | Masayuki Arai | 1988-04-12 |
| 4717960 | Automatic diaphragm control device of variable photometry type used in objective for television camera | Tohru Shikano | 1988-01-05 |
| 4651216 | Remoto-controllable automatic diaphragm control device for use with CCTV camera | Masayuki Arai | 1987-03-17 |
| 4562476 | Automatic diaphragm control device for use IWT CCTV camera | Tohru Shikano, Masayuki Arai | 1985-12-31 |
| 4562477 | Automatic diaphragm control device for use with CCTV camera | Masayuki Arai, Tohru Shikano | 1985-12-31 |
| 4547808 | Photometric circuit incorporated in objective provided with automatic diaphragm for closed circuit television (CCTV) camera | Masayuki Arai, Tohru Shikano | 1985-10-15 |
| 4542410 | Automatic diaphragm control device of objective provided with automatic diaphragm for closed circuit television (CCTV) camera | Masayuki Arai, Tohru Shikano | 1985-09-17 |
| 4472743 | Automatic diaphragm control device for a closed circuit television camera | Masayuki Arai | 1984-09-18 |
| 4453185 | Automatic diaphragm control device for a closed circuit television camera | Tohru Shikano | 1984-06-05 |
| 4451851 | Automatic diaphragm control device for a closed circuit television camera | Masayuki Arai | 1984-05-29 |