Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7277372 | Method and apparatus for recognizing optical discs, optical disc drive, and method and apparatus for distinguishing data storage layer | Katsuya Watanabe, Takashi Kishimoto, Rie Takahashi | 2007-10-02 |
| 6965545 | Optical recording medium with prepit regions and recording/reproducing method thereof | Yasumori Hino, Kazumasa Hirano, Shohei Yumita | 2005-11-15 |
| 6449232 | Disk type determination method | Masaya Kuwahara, Shinichi Yamada, Hiroyuki Yamaguchi, Masuo Maruyama, Masanari Mohri +2 more | 2002-09-10 |
| 6222340 | Stepping motor control device and optical head drive device | Toru Kawabata, Yoshihiro Mushika | 2001-04-24 |
| 5202864 | Slip-off preventing tracking control apparatus | Mitsuro Moriya, Hiroyuki Yamaguchi | 1993-04-13 |
| 5109366 | Slip-off preventing tracking control apparatus | Mitsuro Moriya, Hiroyuki Yamaguchi | 1992-04-28 |