Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6829211 | Optical recording medium having first and second recording areas of different formats | Yoichiro Sako, Tatsuya Inokuchi | 2004-12-07 |
| 6804188 | Data recording medium, data recording apparatus and method, and data reproducing apparatus and method | Yukio Shishido, Tetsuji Kawahima, Yoichiro Sako, Tatsuya Inokuchi, Shigeki Tsukatani | 2004-10-12 |
| 6707784 | Optical storage medium having two recording areas of different formats | Yoichiro Sako, Tatsuya Inokuchi | 2004-03-16 |