Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4846562 | Zoom lens system | Hisashi Tokumaru | 1989-07-11 |
| 4837594 | Automatic focusing device and automatic exposure control device | Akiyoshi Nakamura, Makoto Ando, Nobuyuki Taniguchi | 1989-06-06 |
| 4759617 | Zoom lens system | Hisashi Tokumaru | 1988-07-26 |
| 4728980 | Automatic focusing device and automatic exposure control device | Akiyoshi Nakamura, Makoto Ando, Nobuyuki Taniguchi | 1988-03-01 |
| 4591235 | Zoom lens system | Hisashi Tokumaru | 1986-05-27 |
| 4560253 | Zoom lens system | — | 1985-12-24 |
| 4494828 | Zoom lens system of relatively high zoom ratio ranging to wide angle photography | Hisayuki Masumoto | 1985-01-22 |
| 4264136 | Catadioptric lens system | — | 1981-04-28 |
| 4239340 | Conversion lens system | — | 1980-12-16 |
| 4214814 | Variable soft focus lens system | Toshinobu Ogura, Yukio Okano, Akiyoshi Nakamura | 1980-07-29 |
| 4198128 | Wide angle zoom lens system | — | 1980-04-15 |
| 4192577 | Zoom lens system | — | 1980-03-11 |