Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7233489 | Memory card drive and portable memory card drive | Kiyoshi Omori, Michihiko Iida | 2007-06-19 |
| 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 |
| 6657938 | Disk having expanded elapsed time information | Yoichiro Sako, Tetsuji Kawahima, Yukio Shishido, Shigeki Tsukatani, Tatsuya Inokuchi | 2003-12-02 |
| 6519217 | Data record medium, data recording and/or reproducing apparatus, and record medium determining method | Tetsuji Kawashima, Yoichiro Sako, Tatsuya Inokuchi, Shigeki Tsukatani, Yukio Shishido | 2003-02-11 |
| 6226247 | Data recording apparatus that identifies the type of data in each block of data | Yoichiro Sako | 2001-05-01 |