Issued Patents 2003
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6656560 | Multi-layer optical recording medium and method of manufacturing the same | Keiji Suga, Noriyoshi Shida, Tetsuya Iida | 2003-12-02 |
| 6597861 | Information record medium, apparatus for recording the same and apparatus for reproducing the same | Akihiro Tozaki, Hidehiro Ishii, Tokihiro Takahashi, Hiroshi Nakamura, Takao Sawabe +1 more | 2003-07-22 |
| 6577589 | Information recording medium, information recording apparatus and information reproducing apparatus | Takao Sawabe, Akihiro Tozaki | 2003-06-10 |
| 6574187 | Audio information recording medium and audio information reproducing apparatus | Hidehiro Ishii, Takao Sawabe, Shozo Ema, Yoshinori Hasegawa, Tokihiro Takahashi | 2003-06-03 |
| 6571055 | Compressed audio information recording medium, compressed audio information recording apparatus and compressed audio information reproducing apparatus | Takao Sawabe, Akihiro Tozaki | 2003-05-27 |
| 6567612 | Information record medium, apparatus for recording the same and apparatus for reproducing the same | Junichi Yoshio, Ryuichiro Yoshimura, Takao Sawabe, Yoshiaki Moriyama, Akihiro Tozaki | 2003-05-20 |