Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5694197 | Corneal shape measuring apparatus | Hisashi Tsukada, Tsutomu Sato, Hideki Hatanaka, Takeyuki Kato | 1997-12-02 |
| 5668623 | Corneal shape measuring apparatus | Akio Sakurai, Takeyuki Kato | 1997-09-16 |