Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7239046 | Electric power supply unit and electric power supply controlling method | Kazuyuki Kudo, Akio Ozawa | 2007-07-03 |
| 7092533 | BTL amplifier apparatus | Haruyuki Inohana, Akio Ozawa | 2006-08-15 |
| 6806766 | BTL amplifying system | — | 2004-10-19 |
| 4992749 | Pulse-width modulating amplifier circuit | Akio Tokumo, Masayuki Kato, Takeshi Sato | 1991-02-12 |
| 4968948 | Pulse width modulation amplifier circuit | Akio Tokumo, Masayuki Kato, Takeshi Sato | 1990-11-06 |
| 4952884 | Pulse width modulation amplifier circuit | Akio Tokumo, Masayuki Kato, Takeshi Sato | 1990-08-28 |
| 4949048 | Pulse width modulation amplifier circuit | Akio Tokumo, Masayuki Kato, Takeshi Sato | 1990-08-14 |