Issued Patents All Time
Showing 51–63 of 63 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7227968 | Expandsible Receiver Module | Martin Bondo Jørgensen, Karsten Videbæk, Theodorus Gerardus Maria Brouwer, Paulus Spaanderman, Dennis Jacobus Mattheus Mocking +1 more | 2007-06-05 |
| 7190803 | Acoustic transducer having reduced thickness | — | 2007-03-13 |
| 7181035 | Acoustical receiver housing for hearing aids | Paul Christiaan van Hal | 2007-02-20 |
| 7142682 | Silicon-based transducer for use in hearing instruments and listening devices | Matthias Mullenborn | 2006-11-28 |
| 7136496 | Electret assembly for a microphone having a backplate with improved charge stability | Roelof A. Marissen, Michel Bosman, Dion Ivo de Roo, Raymond Mögelin, Michel de Nooij | 2006-11-14 |
| 7110565 | Electroacoustic transducer with a diaphragm, and method for fixing a diaphragm in such transducer | Wilmink Engbert, Hendrik Dolleman, Paul Christiaan van Hal | 2006-09-19 |
| 6931140 | Electro-acoustic transducer with two diaphragms | Leif Johannsen | 2005-08-16 |
| 6914992 | System consisting of a microphone and a preamplifier | Claus Erdmann Fürst | 2005-07-05 |
| 6084972 | Integrated microphone/amplifier unit, and amplifier module therefor | Engbert Wilmink | 2000-07-04 |
| 6075870 | Electroacoustic transducer with improved shock resistance | Onno Geschiere, Hendrik Dolleman, Huib Groot Obbink | 2000-06-13 |
| 5809158 | Transducer | Onno Geschiere | 1998-09-15 |
| 5255246 | Electroacoustic transducer of the electret type | — | 1993-10-19 |
| 4567382 | Electret transducer and a method for manufacturing an assembly of backplate, electret foil and diaphragm plate | — | 1986-01-28 |