Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5689495 | High density optical disc and optical disc player | Yoichi Tsuchiya, Shuichi Ichiura, Toshio Ito, Yasuyuki Kano, Yoshimoto Yamaguchi +2 more | 1997-11-18 |
| 5659534 | Apparatus for reproducing optical information contained disks of various recording densities | Yoichi Tsuchiya, Shuichi Ichiura, Osamu Ota | 1997-08-19 |