Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6808778 | Optical recording medium | Hideki Sunohara | 2004-10-26 |
| 6754166 | Optical recording medium and optical recording method | Kazuki Suzawa | 2004-06-22 |
| 6699557 | Optical recording medium and optical recording method | Syuji Tsukamoto, Takashi Horai, Shirou Ootsuki | 2004-03-02 |