Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5774439 | Optical-disk recording and reproducing apparatus and optical disk for recording information on lands and grooves | Kazuhiro Aoki, Motoshi Ito | 1998-06-30 |
| 5734633 | Optical-disk recording and reproducing apparatus and method using an optical disk for recording information on lands and grooves | Kazuhiro Aoki, Motoshi Ito | 1998-03-31 |
| 5526330 | Optical head assembly for optical information player | Daisuke Ogata | 1996-06-11 |
| 5508995 | Optical disk capable of recording information on both groove and land tracks | Mitsurou Moriya, Yasuhiro Sugihara, Yasuki Matsumoto, Shin-ichi Yamada | 1996-04-16 |