Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6563574 | Surveying apparatus | Fumio Ohtomo, Hitoshi Ohtani | 2003-05-13 |
| 4917480 | Eye refractive power measuring apparatus | Yasuo Kato, Ikuo Kitao, Yoshihiro Takahashi | 1990-04-17 |
| 4848895 | Automatic eye refractive power measuring apparatus | Yasuo Kato, Shinji Wada, Ikuo Kitao | 1989-07-18 |
| 4744648 | Eye refractive power measuring apparatus | Yasuo Kato, Yasufumi Fukuma, Kiichi Kamiyama | 1988-05-17 |
| 4626089 | Ophthalmic instrument having a focus detecting system | Susumu Takahashi | 1986-12-02 |
| 4591247 | Eye refractometer | Minoru Kamiya, Masayuki Masuyama, Ikuo Kitao, Shinji Wada | 1986-05-27 |
| 4591249 | Exposure control system for ophthalmic photographing apparatus | Susumu Takahashi | 1986-05-27 |