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Patent applications and USPTO patent grants for Charbonneaux; Marc.The latest application filed is for "perforated open volume acoustic resonator".
Patent | Date |
---|---|
Harmonic amplifier and corresponding electro-acoustic transducer Grant 6,944,306 - Charbonneaux , et al. September 13, 2 | 2005-09-13 |
Perforated open volume acoustic resonator Grant 6,777,603 - Charbonneaux , et al. August 17, 2 | 2004-08-17 |
Audio device and method including a membrane having at least two tongues with different resonant frequencies Grant 6,627,805 - Charbonneaux , et al. September 30, 2 | 2003-09-30 |
Perforated open volume acoustic resonator App 20030029669 - Charbonneaux, Marc ;   et al. | 2003-02-13 |
High definition transducer App 20020048386 - Perrichon, Claude Annie ;   et al. | 2002-04-25 |
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