Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7167566 | Transaural stereo device | — | 2007-01-23 |
| 6633648 | Loudspeaker array for enlarged sweet spot | — | 2003-10-14 |
| 5889867 | Stereophonic Reformatter | — | 1999-03-30 |
| 5333200 | Head diffraction compensated stereo system with loud speaker array | Duane H. Cooper | 1994-07-26 |
| 5136651 | Head diffraction compensated stereo system | Duane H. Cooper | 1992-08-04 |
| 5034983 | Head diffraction compensated stereo system | Duane H. Cooper | 1991-07-23 |
| 4975954 | Head diffraction compensated stereo system with optimal equalization | Duane H. Cooper | 1990-12-04 |
| 4910779 | Head diffraction compensated stereo system with optimal equalization | Duane H. Cooper | 1990-03-20 |
| 4893342 | Head diffraction compensated stereo system | Duane H. Cooper | 1990-01-09 |
| 4783754 | Preprocessor for spectral pattern classification systems | Robert Hecht-Nielsen | 1988-11-08 |
| 4687923 | Method for determining the direction of a radiation source | — | 1987-08-18 |
| 4678987 | Feature extractor for quasi-periodic signals | — | 1987-07-07 |
| 4489325 | Electronically scanned space fed antenna system and method of operation thereof | Sam M. Daniel | 1984-12-18 |