Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6551679 | Optical recording medium | Yuji Kuroda | 2003-04-22 |
| 6434108 | Optical disc having narrow recording track relative to light spot diameter | Koichi Yasuda, Atsushi Fukumoto | 2002-08-13 |
| 6373814 | Method of initializing phase-change optical disk to prevent jitter increase due to low level overwriting | Kazumine Ito | 2002-04-16 |
| 6312780 | Optical recording medium | Osamu Kawakubo, Katsuhiro Seo | 2001-11-06 |
| 5768221 | Method of and apparatus for initializing multi-layer optical recording medium | Koichi Yasuda, Atsushi Fukumoto, Shigeki Takagawa | 1998-06-16 |