Issued Patents All Time
Showing 1–23 of 23 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D1045831 | Earphone | Mead C. Killion, Viorel Drambarean | 2024-10-08 |
| 11902750 | System and method for providing an arrangement of two first-order directional microphones arranged in tandem to form a second-order directional microphone system | Mead C. Killion, Viorel Drambarean | 2024-02-13 |
| 9232292 | Electronic earplug windscreen | Stephen D. Julstrom, Viorel Drambarean, Timothy S. Monroe | 2016-01-05 |
| 9198800 | Electronic earplug for providing communication and protection | Mead C. Killion, James Smarr Collins, Timothy S. Monroe, Russ Thoma, Viorel Drambarean +1 more | 2015-12-01 |
| 8649546 | Insert earphone using a moving coil driver | Viorel Drambarean, Mead C. Killion | 2014-02-11 |
| 8107665 | Insert earphone using a moving coil driver | Viorel Drambarean, Mead C. Killion | 2012-01-31 |
| 8091680 | Acoustic resistor for hearing improvement and audiometric applications, and method of making same | Mead C. Killion | 2012-01-10 |
| 8019386 | Companion microphone system and method | William Frank Dunn, Mead C. Killion, Viorel Drambarean | 2011-09-13 |
| 7991179 | High fidelity noise-excluding earphones with ergonomically designed construction | Viorel Drambarean, Mead C. Killion | 2011-08-02 |
| 7881486 | Directional microphone assembly | Mead C. Killion, Robert B. Schulein, Timothy S. Monroe, Viorel Drambarean, John S. French | 2011-02-01 |
| 7832080 | Directional microphone assembly | Mead C. Killion, Robert B. Schulein, Timothy S. Monroe, Viorel Drambarean, John S. French | 2010-11-16 |
| 7551940 | Two-way voice communication device having external acoustic noise reduction | Mary Paulson, Jonathan K. Stewart, Viorel Drambarean, Robert B. Schulein, Mead C. Killion | 2009-06-23 |
| D589028 | Low profile microphone tip assembly | Viorel Drambarean | 2009-03-24 |
| 7286677 | Directional microphone assembly | Mead C. Killion, Robert B. Schulein, Timothy S. Monroe, Viorel Drambarean, John S. French | 2007-10-23 |
| D550200 | Earphone | Viorel Drambarean, Mead C. Killion | 2007-09-04 |
| D550201 | Earphone | Viorel Drambarean, Mead C. Killion | 2007-09-04 |
| D542773 | High fidelity noise excluding earphones with ergonomically designed construction | Viorel Drambarean, Mead C. Killion | 2007-05-15 |
| D535644 | High-fidelity noise-excluding earphones with ergonomically designed construction | Viorel Drambarean, Mead C. Killion | 2007-01-23 |
| 7162041 | Noise canceling microphone with acoustically tuned ports | Viorel Drambarean | 2007-01-09 |
| D533869 | Microphone tip assembly | Viorel Drambarean | 2006-12-19 |
| 6830876 | Acoustic resistor for hearing improvement and audiometric applications, and method of making same | Mead C. Killion | 2004-12-14 |
| 6798890 | Directional microphone assembly | Mead C. Killion, Robert B. Schulein, Timothy S. Monroe, Viorel Drambarean, John S. French | 2004-09-28 |
| 6666295 | Acoustic resistor for hearing improvement and audiometric applications, and method of making same | Mead C. Killion | 2003-12-23 |