Issued Patents All Time
Showing 51–60 of 60 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4376571 | Photographic small size objective | — | 1983-03-15 |
| 4370031 | Zoom objective of small size | — | 1983-01-25 |
| 4364644 | Gauss type large aperture photographic objective | — | 1982-12-21 |
| 4340279 | Rear attachment lens | — | 1982-07-20 |
| 4329022 | Two group type zoom lens with wide image angle | Shin Yamaguchi, Akira Tajima | 1982-05-11 |
| 4310222 | Retro-focus type wide angle lens | — | 1982-01-12 |
| 4299452 | Zoom lens having two movable lens groups | — | 1981-11-10 |
| 4291951 | Compact type retrofocus lens | — | 1981-09-29 |
| 4232942 | Optically compensated zoom lens | — | 1980-11-11 |
| 4206973 | Retrofocus type wide-angle objective | — | 1980-06-10 |