Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7409064 | Music reproduction apparatus, audio player, and headphone | — | 2008-08-05 |
| 7143201 | Externally accessible playback apparatus and method | — | 2006-11-28 |
| 6727421 | Reproducing apparatus | Hidehito Izawa, Shigeo Morimoto | 2004-04-27 |