Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D570830 | Adapter for digital audio player | Tetsuya Iguchi | 2008-06-10 |
| D555169 | Digital audio player | Yasunobu Shimizu | 2007-11-13 |
| D506471 | Data memory storage drive | Yukio Iikura | 2005-06-21 |
| D474170 | Digital audio disc player with radio tuner | Shigeru Hasegawa | 2003-05-06 |