Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6850622 | Sound field correction circuit | — | 2005-02-01 |
| 6763113 | Speaker driving circuit | — | 2004-07-13 |
| 5789975 | Analog signal amplifier and audio signal amplifier | Fumito Yoshida | 1998-08-04 |
| 5155770 | Surround processor for audio signal | — | 1992-10-13 |