Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8311230 | Speaker systems and methods having amplitude and frequency response compensation | — | 2012-11-13 |
| 6925191 | Flat panel speaker | Mayuki Yanagawa, Keiko Muto | 2005-08-02 |
| 6876748 | Digital signal processing for symmetrical stereophonic imaging in automobiles | — | 2005-04-05 |
| 6522758 | Compensation system for planar loudspeakers | — | 2003-02-18 |
| 6038323 | Stereophonic image enhancement system for use in automobiles | — | 2000-03-14 |
| 5970153 | Stereo spatial enhancement system | — | 1999-10-19 |
| 5872851 | Dynamic stereophonic enchancement signal processing system | — | 1999-02-16 |
| 5400405 | Audio image enhancement system | — | 1995-03-21 |
| 4369335 | Two-channel, four loudspeaker-component enhanced sterophonic system | — | 1983-01-18 |