Issued Patents All Time
Showing 26–40 of 40 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7522740 | Multi-coil coupling system for hearing aid applications | Stephen D. Julstrom, Willem Soede | 2009-04-21 |
| D589028 | Low profile microphone tip assembly | Andrew J. Haapapuro | 2009-03-24 |
| 7286677 | Directional microphone assembly | Mead C. Killion, Robert B. Schulein, Timothy S. Monroe, Andrew J. Haapapuro, John S. French | 2007-10-23 |
| D550201 | Earphone | Andrew J. Haapapuro, Mead C. Killion | 2007-09-04 |
| D550200 | Earphone | Andrew J. Haapapuro, Mead C. Killion | 2007-09-04 |
| 7245728 | Microphone for hearing aid and communications applications having switchable polar and frequency response characteristics | Mead C. Killion, Robert B. Schulein, Elmer V. Carlson | 2007-07-17 |
| D542773 | High fidelity noise excluding earphones with ergonomically designed construction | Andrew J. Haapapuro, Mead C. Killion | 2007-05-15 |
| D535644 | High-fidelity noise-excluding earphones with ergonomically designed construction | Andrew J. Haapapuro, Mead C. Killion | 2007-01-23 |
| 7162041 | Noise canceling microphone with acoustically tuned ports | Andrew J. Haapapuro | 2007-01-09 |
| D533869 | Microphone tip assembly | Andrew J. Haapapuro | 2006-12-19 |
| 7099486 | Multi-coil coupling system for hearing aid applications | Stephen D. Julstrom, Willem Soede | 2006-08-29 |
| 6876749 | Microphone for hearing aid and communications applications having switchable polar and frequency response characteristics | Mead C. Killion, Robert B. Schulein, Elmer V. Carlson | 2005-04-05 |
| 6798890 | Directional microphone assembly | Mead C. Killion, Robert B. Schulein, Timothy S. Monroe, Andrew J. Haapapuro, John S. French | 2004-09-28 |
| 6560344 | Miniature surface mounted directional microphone assembly | Stephen D. Julstrom, Robert B. Schulein | 2003-05-06 |
| 4954802 | Bi-metal temperature switch | Henry Wasserstrom | 1990-09-04 |