Charbonneaux; Marc
Patent Applications and Registrations
Patent applications and USPTO patent grants for Charbonneaux; Marc.The latest application filed is for "perforated open volume acoustic resonator".
- Charbonneaux; Marc - Lyons FR
- Charbonneaux, Marc - Lyon FR
| 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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