Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11031123 | Endoscopic examination work support system | Takaharu HOSOI, Hirokazu Nishimura, Yasushi Okoshi, Kohei YADA, Katsuyoshi Ishibashi | 2021-06-08 |
| 5546236 | Wide-angle photographic lens system | Yasuji Ogata | 1996-08-13 |
| 5483381 | Reversed galilean finder optical system | — | 1996-01-09 |