Issued Patents 2004
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6804188 | Data recording medium, data recording apparatus and method, and data reproducing apparatus and method | Tetsuji Kawahima, Yoichiro Sako, Tatsuya Inokuchi, Katsumi Toyama, Shigeki Tsukatani | 2004-10-12 |
| 6785213 | Disk drive apparatus, and disk formatting method | Shigeki Tsukatani, Osamu Udagawa | 2004-08-31 |
| 6714509 | Disk recording medium and disk drive apparatus | Eiji Kumagai, Michihiko Iida | 2004-03-30 |
| 6704262 | Optical disc and optical disc apparatus for identifying synchronization patterns thereof | Tetsuji Kawashima | 2004-03-09 |
| 6693855 | Optical disc and optical disc apparatus | Tetsuji Kawashima, Futoshi Tsukada, Kunihiko Miyake | 2004-02-17 |