Issued Patents All Time
Showing 51–61 of 61 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4384770 | Focus detecting device | Seijiro Tokutomi, Michiro Ohishi, Kazuo Nakamura, Masao Jyojiki, Satoru Tachihara | 1983-05-24 |
| 4354756 | Copying apparatus | Yasunori Arai, Michiro Ohishi | 1982-10-19 |
| 4348082 | Zoom lens having high zoom ratio including wide angle range | — | 1982-09-07 |
| 4333711 | Zoom lens for copying | Takayuki Itoh, Yasunori Arai | 1982-06-08 |
| 4331389 | Compact zoom lens system | Yasuo Takahashi | 1982-05-25 |
| 4322159 | Variable magnification type copying machine | Sataro Takahashi, Yasunori Arai | 1982-03-30 |
| 4258989 | Focus detecting device | Seijiro Tokutomi, Michiro Ohishi, Kazuo Nakamura, Masao Jyojiki, Satoru Tachihara | 1981-03-31 |
| 4240700 | Wide angle zoom lens having a high variation ratio | Sadao Okudaira, Satoru Tachihara | 1980-12-23 |
| 4210387 | Focus device for zoom lens | — | 1980-07-01 |
| 4190323 | Wide angle zoom lens with high zoom ratio | Takayuki Itoh | 1980-02-26 |
| 4185893 | Zoom lenses | Sadao Okudaira, Takayuki Itoh, Satoru Tachihara | 1980-01-29 |