Issued Patents All Time
Showing 76–80 of 80 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4198127 | Wide angle zoom lens system having small distortion | — | 1980-04-15 |
| 4196968 | Wide angle zoom lens system | — | 1980-04-08 |
| 4196969 | Zoom lens having a small distortion aberration | — | 1980-04-08 |
| 4190323 | Wide angle zoom lens with high zoom ratio | Ryota Ogawa | 1980-02-26 |
| 4185893 | Zoom lenses | Ryota Ogawa, Sadao Okudaira, Satoru Tachihara | 1980-01-29 |