Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8750544 | Electronic earplug with transistor switching for introducing electronic control of the gain and providing audible switch indications | Mead C. Killion | 2014-06-10 |
| 7764801 | Directional microphone array system | Willem Soede, Robert B. Schulein, Roland Horsten | 2010-07-27 |
| 7697705 | High fidelity digital hearing aid and methods of programming and operating same | Mead C. Killion, John S. French, Steven Viranyi, Timothy S. Monroe, David A. Preves +1 more | 2010-04-13 |
| 7460677 | Directional microphone array system | Willem Soede, Robert B. Schulein, Roland Horsten | 2008-12-02 |
| 6694034 | Transmission detection and switch system for hearing improvement applications | Stephen D. Julstrom, Elmer V. Carlson, Robert B. Schulein, Willem Soede | 2004-02-17 |
| 6009311 | Method and apparatus for reducing audio interference from cellular telephone transmissions | Mead C. Killion | 1999-12-28 |
| 5696833 | Hearing aid having externally controlled amplifier gain and method of using same | Mead C. Killion | 1997-12-09 |
| 5131046 | High fidelity hearing aid amplifier | Mead C. Killion, Clyde M. Brown, Jr., William A. Cole, James B. Compton, Steven J. Iseberg +2 more | 1992-07-14 |