Issued Patents All Time
Showing 1–25 of 47 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10812895 | Multi-driver loudspeaker with cross-coupled dual wave-columns | Michael Smithers, Garth Norman SHOWALTER | 2020-10-20 |
| 10090819 | Signal processor for loudspeaker systems for enhanced perception of lower frequency output | — | 2018-10-02 |
| 9344783 | Inverse horn loudspeakers | Philip R. Clements, Boaz Shalev | 2016-05-17 |
| 9247342 | Loudspeaker enclosure system with signal processor for enhanced perception of low frequency output | — | 2016-01-26 |
| 9197965 | Planar-magnetic transducer with improved electro-magnetic circuit | — | 2015-11-24 |
| 8942408 | Magnetically one-side driven planar transducer with improved electro-magnetic circuit | — | 2015-01-27 |
| 8588428 | Dynamic power sharing in a multi-channel sound system | — | 2013-11-19 |
| 8275137 | Audio distortion correction for a parametric reproduction system | Wensen Liu, Norbert P. Daberko | 2012-09-25 |
| 8199931 | Parametric loudspeaker with improved phase characteristics | Elwood G. Norris, Joseph O. Norris | 2012-06-12 |
| 8194502 | Variable directivity loud hailing device | — | 2012-06-05 |
| 7729498 | Modulator processing for a parametric speaker system | Michael E. Spencer, Joseph O. Norris | 2010-06-01 |
| 7596229 | Parametric audio system for operation in a saturated air medium | — | 2009-09-29 |
| 7564981 | Method of adjusting linear parameters of a parametric ultrasonic signal to reduce non-linearities in decoupled audio output waves and system including same | — | 2009-07-21 |
| 7551062 | Directional acoustic device | Wensen Liu, Clifton Wynn Thompson | 2009-06-23 |
| 7376236 | Piezoelectric film sonic emitter | Joseph O. Norris, Alan Robert Selfridge, Pierre Khuri-Yakub | 2008-05-20 |
| 7343017 | System for playback of pre-encoded signals through a parametric loudspeaker system | Joseph O. Norris | 2008-03-11 |
| 7319763 | Power amplification for parametric loudspeakers | Jeevan G. Bank | 2008-01-15 |
| 7298852 | Dynamic power sharing in a multi-channel sound system | — | 2007-11-20 |
| 7298853 | Parametric virtual speaker and surround-sound system | Elwood G. Norris | 2007-11-20 |
| 7224808 | Dynamic carrier system for parametric arrays | Michael E. Spencer | 2007-05-29 |
| 7162042 | Modulator processing for a parametric speaker system | Michael E. Spencer, Joseph O. Norris | 2007-01-09 |
| 7158646 | Signal derived bias supply for electrostatic loudspeakers | Jeevan G. Bank | 2007-01-02 |
| 7142688 | Single-ended planar-magnetic speaker | David Graebener | 2006-11-28 |
| 7103193 | Bandpass woofer enclosure with multiple acoustic fibers | — | 2006-09-05 |
| 7088830 | Parametric ring emitter | Elwood G. Norris, Vaughn W. North | 2006-08-08 |