Issued Patents All Time
Showing 51–56 of 56 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4247171 | Compact photographic lens with large aperture | — | 1981-01-27 |
| 4240698 | Large aperture zoom lens | Yasuhisa Sato | 1980-12-23 |
| 4240699 | Zoom lens having extended focusing range | Yasuhisa Sato, Katsumi Tanaka | 1980-12-23 |
| 4230398 | Zoom lens system | Yasuhisa Sato | 1980-10-28 |
| 4200358 | Wide-angle type zoom lens | Yasuhisa Sato | 1980-04-29 |
| 4200380 | Camera provided with means for giving information about photographing | Yasuhisa Sato, Kazuo Ishikawa, Susumu Matsumura | 1980-04-29 |