Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7928958 | Peripheral device control apparatus | Tadashi Sugiyama, Tatsuya Fukuyama | 2011-04-19 |
| 7657335 | Digital audio signal reproducing apparatus | Tadashi Sugiyama | 2010-02-02 |
| 6892350 | Audio system with customization of information display | Masaya Kano | 2005-05-10 |