Issued Patents All Time
Showing 26–45 of 45 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4653874 | Zoom lens | Sadatoshi Takahashi, Toshiaki Asano, Sadahiko Tsuji, Kazuo Fujibayashi | 1987-03-31 |
| 4650291 | Zoom lens | — | 1987-03-17 |
| 4639095 | Telephoto zoom lens | — | 1987-01-27 |
| 4630899 | Zoom lens having movable diaphragm | Keiji Ikemori | 1986-12-23 |
| 4621905 | Fast compact zoom lens | Muneharu Sugiura | 1986-11-11 |
| 4618220 | Telephoto zoom lens | — | 1986-10-21 |
| 4609272 | Finder system of high image magnification | Hideo Yokota, Tetsuharu Nishimura | 1986-09-02 |
| 4592636 | View finder optical system | Tetsuharu Nishimura, Hideo Yokota | 1986-06-03 |
| 4573781 | Viewfinder having two image planes | — | 1986-03-04 |
| 4571033 | Zoom lens | Nozomu Kitagishi, Jun Hattori | 1986-02-18 |
| 4571031 | Wide angle zoom objective | — | 1986-02-18 |
| 4565433 | Viewfinder for camera | — | 1986-01-21 |
| 4553823 | Large relative aperture objective lens | Shigeru Hashimoto | 1985-11-19 |
| 4523828 | Focus detecting device | — | 1985-06-18 |
| 4478496 | Zoom lens | — | 1984-10-23 |
| 4466710 | Large relative aperture objective lens | Shigeru Hashimoto | 1984-08-21 |
| 4464023 | Large relative aperture objective | Shigeru Hashimoto | 1984-08-07 |
| 4456341 | Zoom objective | — | 1984-06-26 |
| 4455071 | Light measuring instrument for a single lens reflex camera | Tokuichi Tsunekawa | 1984-06-19 |
| 4390251 | Photographic objectives of relatively large aperture | — | 1983-06-28 |