Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10061100 | Zoom lens device | — | 2018-08-28 |
| 9175831 | Illumination aperture diaphragm | Takayuki Sato | 2015-11-03 |
| 8817384 | Zoom lens device | — | 2014-08-26 |
| 8711461 | Aperture stop | Takayuki Sato | 2014-04-29 |
| 6172709 | Detachable lens block and video camera system including the same | Mitsuyoshi Koizumi, Makoto Amano, Akira Tamura | 2001-01-09 |