Issued Patents All Time
Showing 26–50 of 56 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4673262 | Compact finder | — | 1987-06-16 |
| 4659187 | Zoom lens using elements made of plastic materials | Sadatoshi Takahashi | 1987-04-21 |
| 4653874 | Zoom lens | Sadatoshi Takahashi, Toshiaki Asano, Kazuo Fujibayashi, Masatake Kato | 1987-03-31 |
| 4626076 | Zoom lens | Sigeru Oshima | 1986-12-02 |
| 4618219 | Zoom lens | Muneharu Sugiura, Kazuo Fujibayashi | 1986-10-21 |
| 4618762 | In-focus position detecting apparatus | Jun Hattori | 1986-10-21 |
| 4589031 | Video camera | — | 1986-05-13 |
| 4580878 | Picture taking optical system for color video camera | — | 1986-04-08 |
| 4544250 | Optical system for camera with a viewfinder | Kazuo Tanaka | 1985-10-01 |
| 4525036 | Zoom lens | Kazuo Fujibayashi, Muneharu Sugiura | 1985-06-25 |
| 4515446 | Zoom objective | Sadatoshi Takahashi, Akira Tajima, Toshiaki Asano, Setsuo Minami | 1985-05-07 |
| 4508433 | Telephoto objective | Nozomu Kitagishi | 1985-04-02 |
| 4478503 | Weighted metering device in camera | Tokuichi Tsunekawa | 1984-10-23 |
| 4477148 | Optical low-pass filter | Akira Tajima | 1984-10-16 |
| 4453813 | Photometric device for single-lens reflex camera | — | 1984-06-12 |
| 4439018 | Zoom lens structure | Hidekazu Okajima | 1984-03-27 |
| 4407568 | Large aperture objective with behind the lens diaphragm | Hideo Yokota | 1983-10-04 |
| 4391493 | Method to increase focal distance at telephotographic side of a zoom lens system | Akira Tajima | 1983-07-05 |
| 4380377 | Compact zoom lens | Yasuhisa Sato | 1983-04-19 |
| 4371261 | Range finder | — | 1983-02-01 |
| 4368954 | Compact zoom objective | — | 1983-01-18 |
| 4336983 | Photographic objective stabilized against change of angular field during focusing | Kazuo Tanaka | 1982-06-29 |
| 4318593 | Zoom lens assembly with two movable focusing lens groups | Noritsugu Hirata, Kazuo Tanaka | 1982-03-09 |
| 4294529 | Camera | Yasuhisa Sato, Kazuo Ishikawa | 1981-10-13 |
| 4251133 | Large aperture telephoto-lens | — | 1981-02-17 |