Issued Patents All Time
Showing 51–75 of 98 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7206426 | Multi-coil coupling system for hearing aid applications | Steven D. Julstrom | 2007-04-17 |
| D535644 | High-fidelity noise-excluding earphones with ergonomically designed construction | Viorel Drambarean, Andrew J. Haapapuro | 2007-01-23 |
| 7103191 | Hearing aid having second order directional response | — | 2006-09-05 |
| 7050592 | Hearing test apparatus and method having automatic starting functionality | Steven J. Iseberg, Gregory R. Shaw, Erik C. Gundersen, Laurel Christensen | 2006-05-23 |
| 7003126 | Dynamic range analog to digital converter suitable for hearing aid applications | Dan Mapes-Riordan | 2006-02-21 |
| 6876749 | Microphone for hearing aid and communications applications having switchable polar and frequency response characteristics | Robert B. Schulein, Elmer V. Carlson, Viorel Drambarean | 2005-04-05 |
| 6830876 | Acoustic resistor for hearing improvement and audiometric applications, and method of making same | Andrew J. Haapapuro | 2004-12-14 |
| 6831987 | Directional microphone assembly | Jonathan K. Stewart, Don Wilson, Matthew Roberts, Steve Iseberg, Timothy S. Monroe | 2004-12-14 |
| 6798890 | Directional microphone assembly | Robert B. Schulein, Timothy S. Monroe, Viorel Drambarean, Andrew J. Haapapuro, John S. French | 2004-09-28 |
| 6704424 | Hearing aid with audible alarm | — | 2004-03-09 |
| 6666295 | Acoustic resistor for hearing improvement and audiometric applications, and method of making same | Andrew J. Haapapuro | 2003-12-23 |
| 6567526 | Directional microphone assembly | Jonathan K. Stewart, Don Wilson, Matthew Roberts, Steve Iseberg, Timothy S. Monroe | 2003-05-20 |
| 6466678 | Hearing aid having digital damping | Chris W. Papalias, Anthony J. Becker, Dan Mapes-Riordan | 2002-10-15 |
| 6453051 | Hearing aid with audible alarm | — | 2002-09-17 |
| 6331164 | Hearing test apparatus and method having adaptive artifact rejection | Gregory R. Shaw | 2001-12-18 |
| 6327370 | Hearing aid having plural microphones and a microphone switching system | Fred Waldhauer, Johannes Wittkowski, Richard Goode, Jont B. Allen | 2001-12-04 |
| 6320969 | Hearing aid with audible alarm | — | 2001-11-20 |
| 6285771 | Directional microphone assembly | Jonathan K. Stewart, Don Wilson, Matthew Roberts, Steve Iseberg, Timothy S. Monroe | 2001-09-04 |
| 6151399 | Directional microphone system providing for ease of assembly and disassembly | Robert B. Schulein, Timothy S. Monroe | 2000-11-21 |
| 6134334 | Directional microphone assembly | Jonathan K. Stewart, Don Wilson, Matthew Roberts, Steve Iseberg, Timothy S. Monroe | 2000-10-17 |
| 6101258 | Hearing aid having plural microphones and a microphone switching system | Fred Waldhauer, Johannes Wittkowski, Richard Goode, Jont B. Allen | 2000-08-08 |
| 6075869 | Directional microphone assembly | Jonathan K. Stewart, Don Wilson, Matthew Roberts, Steve Iseberg, Timothy S. Monroe | 2000-06-13 |
| 6056698 | Apparatus for audibly monitoring the condition in an ear, and method of operation thereof | Steven J. Iseberg, Greg R. Shaw | 2000-05-02 |
| 6047075 | Damper for hearing aid | Chris W. Papalias, Anthony J. Becker | 2000-04-04 |
| 6009311 | Method and apparatus for reducing audio interference from cellular telephone transmissions | Norman P. Matzen | 1999-12-28 |