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20080230304 | Membrane for an Electroacoustic Transducer - A membrane ( | 09-25-2008 |
20080292119 | Asymmetrical Moving Systems for a Piezoelectric Speaker and Asymmetrical Speaker - The present invention discloses a moving system ( | 11-27-2008 |
20100040246 | COMPOUND MEMBRANE, METHOD OF MANUFACTURING THE SAME, AND ACOUSTIC DEVICE - A compound membrane ( | 02-18-2010 |
20100046773 | ACOUSTIC DEVICE AND METHOD OF MANUFACTURING THE SAME - An acoustic device ( | 02-25-2010 |
20100092011 | MEMBRANE FOR AN ELECTROACOUSTIC TRANSDUCER AND ACOUSTIC DEVICE - A membrane for an electroacoustic transducer is disclosed, wherein said membrane ( | 04-15-2010 |
20100239109 | ACOUSTIC DEVICE AND METHOD OF MANUFACTURING SAME - An acoustic device ( | 09-23-2010 |
20110019866 | MEMBRANE FOR AN ELECTROACOUSTIC TRANSDUCER - A membrane for an electroacoustic transducer is disclosed having a first area, a second area, which is arranged for translatory movement in relation to said first area, and a third area, which connects said first area and said second area, wherein local, planar spring constants along a closed line within said third area encompassing said second area, are determined in such a way that local, translatory spring constants along said line in a direction of said translatory movement are substantially constant or exclusively have substantially flat, mutual changes. | 01-27-2011 |
20110206222 | MEMBRANE FOR AN ACOUSTIC TRANSDUCER - A membrane for an acoustic transducer is provided which comprises a first portion having a first stiffness, and a second portion comprising a first subsection having a second stiffness and a second subsection having a third stiffness, wherein the second stiffness and the third stiffness are different. | 08-25-2011 |
20120093353 | Micro Speaker - A speaker comprises a permanent magnet ( | 04-19-2012 |