Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5504735 | Information recording disk having a stepped central recess and hub configuration | Tsutomu Ota, Mamoru Sugimoto, Yasuto Nose, Hidetoshi Yoshitaki, Takashi Hayashi | 1996-04-02 |
| 5265086 | Information recording disk | Tsutomu Ota, Mamoru Sugimoto, Yasuto Nose, Hidetoshi Yoshitaki, Takashi Hayashi | 1993-11-23 |