Issued Patents All Time
Showing 1–25 of 26 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8483407 | Noise reducing circuit | — | 2013-07-09 |
| 8265283 | Acoustic processing device and acoustic processing method | — | 2012-09-11 |
| 8164388 | Amplifying apparatus | — | 2012-04-24 |
| 8149057 | Signal processing circuit | — | 2012-04-03 |
| 8050425 | Audio signal supplying device, parameter providing system, television set, AV system, speaker apparatus, and audio signal supplying method | — | 2011-11-01 |
| 7961044 | Amplifier | — | 2011-06-14 |
| 7961011 | Amplifier | Hirotoshi Tsuchiya | 2011-06-14 |
| 7551031 | Amplifier | — | 2009-06-23 |
| 7482870 | Class D amplifier | Toshio Maejima | 2009-01-27 |
| 5999630 | Sound image and sound field controlling device | — | 1999-12-07 |
| 5727067 | Sound field control device | — | 1998-03-10 |
| 5680464 | Sound field controlling device | — | 1997-10-21 |
| 5524053 | Sound field control device | — | 1996-06-04 |
| 5046107 | Input level adjusting circuit | — | 1991-09-03 |
| 5040220 | Control circuit for controlling reproduced tone characteristics | — | 1991-08-13 |
| 5027687 | Sound field control device | — | 1991-07-02 |
| 4910515 | Digital signal processing circuit | — | 1990-03-20 |
| 4899150 | Digital signal processing circuit | — | 1990-02-06 |
| 4856064 | Sound field control apparatus | — | 1989-08-08 |
| 4851842 | Analog-to-digital conversion circuit | — | 1989-07-25 |
| 4745298 | Signal selection circuit | — | 1988-05-17 |
| 4476442 | Amplifier with distortion cancellation | — | 1984-10-09 |
| 4356452 | Class A push-pull amplifier with bias controlling circuit | — | 1982-10-26 |
| 4302727 | Power amplifier having bias circuit with temperature compensation | — | 1981-11-24 |
| 4241314 | Transistor amplifier circuits | — | 1980-12-23 |