Issued Patents All Time
Showing 51–62 of 62 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4721369 | Gradient index single lens | Jun Hattori, Rohra Aruna | 1988-01-26 |
| 4706124 | Focus detecting device which varies between a varying state and a fixed state | Takeshi Baba | 1987-11-10 |
| 4696552 | Projection device with refractive index distribution type lens | Jun Hattori | 1987-09-29 |
| 4678899 | Afocal variable magnification optical system | Takeshi Baba | 1987-07-07 |
| 4667316 | Information recording-reproducing apparatus | Yukichi Niwa, Yasuo Ogino, Eigo Kawakami, Mitsutoshi Ohwada | 1987-05-19 |
| 4657352 | Image optical system including a non-spherical single lens | Masayuki Suzuki, Toshinori Ando | 1987-04-14 |
| 4595271 | In-focus state detection device | Yukichi Niwa, Yasuo Ogino, Mitsutoshi Ohwada | 1986-06-17 |
| 4592637 | Focus detecting device | — | 1986-06-03 |
| 4571032 | Zoom lens | Atsushi Someya | 1986-02-18 |
| 4477153 | Ultrawide angle zoom objective | Keiji Ikemori | 1984-10-16 |
| 4465342 | Zoom lens | Kazuo Tanaka | 1984-08-14 |
| 4380376 | Zoom objective | Kazuo Tanaka | 1983-04-19 |