Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9715104 | Light-quantity control apparatus and optical apparatus | Akira Fujita | 2017-07-25 |
| 8783977 | Light-quantity control apparatus and optical apparatus | Naoki Kawakubo, Akira Kurosawa, Mitsuo Shibata | 2014-07-22 |