Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9735762 | Amplifier | Hiroyuki Tsurumi | 2017-08-15 |
| 8232838 | Audio dropout amplifier | Hiroyuki Tsurumi, Yuki Sato | 2012-07-31 |
| 7696827 | Power amplifier system provided with improved protection function | Hiroyuki Tsurumi | 2010-04-13 |
| 7375589 | Power amplifier system provided with improved protection function | Hiroyuki Tsurumi | 2008-05-20 |