Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7092533 | BTL amplifier apparatus | Tatsuzo Hasegawa, Akio Ozawa | 2006-08-15 |
| 6587566 | Sound field forming circuit and sound field forming apparatus | Yukiya Iigai, Akio Ozawa, Kazuyuki Kudo | 2003-07-01 |
| 6424210 | Isolator circuit | Yukiya Iigai, Akio Ozawa, Kazuyuki Kudo | 2002-07-23 |
| 6201718 | Step-up power supply circuit and integrated circuit device | Norio Yoshizumi, Akio Ozawa | 2001-03-13 |
| 6191962 | Step-up power supply circuit and semiconductor integrated circuit device | Norio Yoshizumi, Akio Ozawa | 2001-02-20 |
| 6005785 | Power supply circuit | Kazuyuki Kudou, Tatsuzou Hasegawa | 1999-12-21 |
| 5184086 | Differential amplifier | Shintaro Gomi | 1993-02-02 |
| 5179352 | Amplifier with distortion reducing feedback | — | 1993-01-12 |
| 4890170 | Waveform equalization circuit for a magnetic reproducing device | Saburo Takaoka, Hideaki Takada | 1989-12-26 |