Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11696070 | Protection of speaker from excess excursion | Harry K. Lau, Michael L. Townsend | 2023-07-04 |
| 11184705 | Protection of speaker from excess excursion | Harry K. Lau, Michael L. Townsend | 2021-11-23 |
| 10845479 | Movement and presence detection systems and methods using sonar | — | 2020-11-24 |
| 7925004 | Speakerphone with downfiring speaker and directional microphones | Gordon Simmons | 2011-04-12 |
| 7484530 | Dual purpose alignment and fluid coupling | Rex J. Harvey, Joseph Marban | 2009-02-03 |
| 7236929 | Echo suppression and speech detection techniques for telephony applications | — | 2007-06-26 |