Issued Patents All Time
Showing 1–25 of 36 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6900886 | Photometric apparatus | — | 2005-05-31 |
| 6714293 | Exposure meter | Yasushi Goto | 2004-03-30 |
| 4994845 | Light measuring device | Kazuhiko Naruse | 1991-02-19 |
| 4914468 | Light measuring device | Kazuhiko Naruse | 1990-04-03 |
| 4717861 | Electronic flash device | Kazuhiko Naruse, Masahito Inaba | 1988-01-05 |
| 4704025 | Enlarger for use in photography | Hidetoshi Yasumoto, Kazuhiko Naruse, Nobukazu Kawagoe, Masahito Inaba | 1987-11-03 |
| RE32437 | Light measuring device for flash photography | Nobuyuki Taniguchi | 1987-06-09 |
| 4655576 | Light measuring device | Kazuhiko Naruse, Masahito Inaba | 1987-04-07 |
| 4637721 | Light measuring device | Kazuhiko Naruse | 1987-01-20 |
| 4608522 | Electronic flash device | Kazuhiko Naruse, Masahito Inaba | 1986-08-26 |
| 4601571 | Exposure determining device for an enlarger | Nobukazu Kawagoe | 1986-07-22 |
| 4576470 | Enlarger for use in photography | Hidetoshi Yasumoto, Kazuhiko Naruse, Nobukazu Kawagoe, Masahito Inaba | 1986-03-18 |
| 4575225 | Color enlarger | Hidetoshi Yasumoto, Kazuhiko Naruse, Nobukazu Kawagoe, Masahito Inaba | 1986-03-11 |
| 4551011 | Light source for exposure | Hidetoshi Yasumoto, Nobukazu Kawagoe, Kazuhiko Naruse, Masahito Inaba | 1985-11-05 |
| 4531830 | Automatic focusing device for an enlarger | Nobukazu Kawagoe, Hidetoshi Yasumoto | 1985-07-30 |
| 4518250 | Exposure control device for a photographic enlarger | Nobukazu Kawagoe | 1985-05-21 |
| 4485336 | Electronic flash device | Ichiro Yoshiyama, Nobuyuki Taniguchi, Norio Ishikawa | 1984-11-27 |
| 4482978 | Key switch input control circuit | Kazuhiko Naruse, Nobukazu Kawagoe | 1984-11-13 |
| 4469437 | Light measurement and light control data calculation device for a photographic enlarger | Hidetoshi Yasumoto, Kazuhiko Naruse, Nobukazu Kawagoe, Masahito Inaba | 1984-09-04 |
| 4465354 | System and method for calculating a light information value | — | 1984-08-14 |
| 4465370 | Light measuring device | Nobukazu Kawagoe | 1984-08-14 |
| 4449822 | Exposure indicator | Kazuhiko Naruse | 1984-05-22 |
| 4440489 | Exposure aiding device for an enlarger | — | 1984-04-03 |
| 4402611 | Colorimeter | — | 1983-09-06 |
| 4401386 | Light measuring device | Kazuhiko Naruse | 1983-08-30 |