Iwamatsu; Masayuki
Patent Applications and Registrations
Patent applications and USPTO patent grants for Iwamatsu; Masayuki.The latest application filed is for "signal processing circuit".
- Iwamatsu; Masayuki - Hamamatsu JP
- Iwamatsu; Masayuki - Hamamatsu-shi JP
- Iwamatsu; Masayuki - Shizuoka-ken JP
- Iwamatsu; Masayuki - Shizuoka JP
| Patent | Date |
|---|---|
| Noise reducing circuit Grant 8,483,407 - Iwamatsu July 9, 2 | 2013-07-09 |
| Acoustic processing device and acoustic processing method Grant 8,265,283 - Iwamatsu September 11, 2 | 2012-09-11 |
| Amplifying apparatus Grant 8,164,388 - Iwamatsu April 24, 2 | 2012-04-24 |
| Signal processing circuit Grant 8,149,057 - Iwamatsu April 3, 2 | 2012-04-03 |
| Audio signal supplying device, parameter providing system, television set, AV system, speaker apparatus, and audio signal supplying method Grant 8,050,425 - Iwamatsu November 1, 2 | 2011-11-01 |
| Signal processing circuit App 20110181362 - Iwamatsu; Masayuki | 2011-07-28 |
| Amplifier Grant 7,961,011 - Iwamatsu , et al. June 14, 2 | 2011-06-14 |
| Amplifier Grant 7,961,044 - Iwamatsu June 14, 2 | 2011-06-14 |
| Amplifying apparatus App 20110068872 - Iwamatsu; Masayuki | 2011-03-24 |
| Noise reducing circuit App 20110026735 - Iwamatsu; Masayuki | 2011-02-03 |
| Amplifier App 20100127778 - Iwamatsu; Masayuki | 2010-05-27 |
| Amplifier Grant 7,551,031 - Iwamatsu June 23, 2 | 2009-06-23 |
| Audio Signal Supplying Device, Parameter Providing System, Television Set, Av System, Speaker Apparatus, And Audio Signal Supplying Method App 20090147134 - Iwamatsu; Masayuki | 2009-06-11 |
| Acoustic Processing Device And Acoustic Processing Method App 20090141911 - Iwamatsu; Masayuki | 2009-06-04 |
| Class D amplifier App 20090115514 - Maejima; Toshio ; et al. | 2009-05-07 |
| Amplifier App 20090091355 - Iwamatsu; Masayuki ; et al. | 2009-04-09 |
| Electroacoustic transducer App 20090052696 - Iwamatsu; Masayuki | 2009-02-26 |
| Class D amplifier Grant 7,482,870 - Maejima , et al. January 27, 2 | 2009-01-27 |
| Amplifier App 20080297257 - Iwamatsu; Masayuki | 2008-12-04 |
| Class D amplifier App 20070103234 - Maejima; Toshio ; et al. | 2007-05-10 |
| Sound image and sound field controlling device Grant 5,999,630 - Iwamatsu December 7, 1 | 1999-12-07 |
| Sound field control device Grant 5,727,067 - Iwamatsu March 10, 1 | 1998-03-10 |
| Sound field controlling device Grant 5,680,464 - Iwamatsu October 21, 1 | 1997-10-21 |
| Sound field control device Grant 5,524,053 - Iwamatsu June 4, 1 | 1996-06-04 |
| Input level adjusting circuit Grant 5,046,107 - Iwamatsu September 3, 1 | 1991-09-03 |
| Control circuit for controlling reproduced tone characteristics Grant 5,040,220 - Iwamatsu August 13, 1 | 1991-08-13 |
| Sound field control device Grant 5,027,687 - Iwamatsu July 2, 1 | 1991-07-02 |
| Digital signal processing circuit Grant 4,910,515 - Iwamatsu March 20, 1 | 1990-03-20 |
| Digital signal processing circuit Grant 4,899,150 - Iwamatsu February 6, 1 | 1990-02-06 |
| Sound field control apparatus Grant 4,856,064 - Iwamatsu August 8, 1 | 1989-08-08 |
| Analog-to-digital conversion circuit Grant 4,851,842 - Iwamatsu July 25, 1 | 1989-07-25 |
| Amplifier with distortion cancellation Grant 4,476,442 - Iwamatsu October 9, 1 | 1984-10-09 |
| Class A push-pull amplifier with bias controlling circuit Grant 4,356,452 - Iwamatsu October 26, 1 | 1982-10-26 |
| Power amplifier having bias circuit with temperature compensation Grant 4,302,727 - Iwamatsu November 24, 1 | 1981-11-24 |
| Power amplifier devices Grant 4,087,759 - Iwamatsu May 2, 1 | 1978-05-02 |
| Amplifier devices Grant 4,077,012 - Iwamatsu February 28, 1 | 1978-02-28 |
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