Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4540253 | Method and device for measuring eye refraction errors | Shuji Hoshika, Yukiyasu Nishikawa, Masato Hara, Hirochika Aiura, Ikuzo Okamoto +1 more | 1985-09-10 |
| 4486080 | Device for detecting blinking of an eye under examination | Kiyoshi Itoh, Yukiyasu Nishikawa, Shuji Hoshika, Masato Hara, Ikuzo Okamoto +1 more | 1984-12-04 |
| 4356513 | CCD Scanner with improved resolution | Norihiko Yoshimura, Masaaki Niiho, Shoji Kamasako | 1982-10-26 |