Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6944306 | Harmonic amplifier and corresponding electro-acoustic transducer | Patrice Morchain, Pierre Piccaluga, Claude Annie Perrichon | 2005-09-13 |
| 6777603 | Perforated open volume acoustic resonator | Patrice Morchain, Pierre Piccaluga, Claude Annie Perrichon | 2004-08-17 |
| 6627805 | Audio device and method including a membrane having at least two tongues with different resonant frequencies | Patrice Morchain, Pierre Piccaluga, Claude Annie Perrichon | 2003-09-30 |