Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7492218 | Digital amplifier apparatus and method of resetting a digital amplifier apparatus | Toshihiko Masuda, Yusuke Yamamoto | 2009-02-17 |
| 7432760 | Digital amplifier apparatus and method of muting digital amplifier apparatus | Toshihiko Masuda, Yusuke Yamamoto | 2008-10-07 |