Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7155112 | Video data recording medium, video data recording apparatus and video playback apparatus | Yoshiyuki Ishizawa | 2006-12-26 |
| 6819862 | Video data recording medium, video data recording apparatus and video data playback apparatus | Yoshiyuki Ishizawa | 2004-11-16 |
| 6289166 | Video data recording medium, video data recording apparatus and video data playback apparatus | Yoshiyuki Ishizawa | 2001-09-11 |