Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7962701 | Recording meduim playback apparatus | Tatsuya Yamaguchi | 2011-06-14 |
| 7483352 | Recording medium reproduction device | Tatsuya Yamaguchi | 2009-01-27 |
| 7251719 | Recording medium playback apparatus | Tatsuya Yamaguchi | 2007-07-31 |