Issued Patents All Time
Showing 26–28 of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4998807 | Variable focal length lens system | Tsutomu Uzawa, Norihiko Aoki | 1991-03-12 |
| 4976521 | Zoom lens system | Tsutomu Uzawa | 1990-12-11 |
| 4973143 | Zoom lens system | Shinichi Mihara | 1990-11-27 |