Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8189839 | Hearing device improvements using modulation of acoustically coupled signals at middle ear resonance | Douglas Richards | 2012-05-29 |
| 8172769 | Method and apparatus for monitoring intra ocular and intra cranial pressure | Kevin R. Ward | 2012-05-08 |
| 8111860 | Recreational bone conduction audio device, system | Sheldon M. Retchin | 2012-02-07 |
| 7616771 | Acoustic coupler for skin contact hearing enhancement devices | Douglas Richards | 2009-11-10 |
| 7310427 | Recreational bone conduction audio device, system | Sheldon M. Retchin | 2007-12-18 |