| Patents for H04R 19 - Electrostatic transducers (5,387) |
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| 05/06/2009 | CN101426163A Vibration sensor and method for manufacturing the same |
| 05/06/2009 | CN100486359C Method for preparing microphone chip |
| 04/30/2009 | WO2007078433A3 Electrostatic acoustic transducer based on rolling contact micro actuator |
| 04/23/2009 | WO2009051850A1 Diaphragm for a condenser microphone |
| 04/23/2009 | WO2009051318A1 Stray capacitance reduced condenser microphone |
| 04/22/2009 | EP2051539A1 MEMS microphone package |
| 04/22/2009 | CN201226594Y Silicon-based capacitance microphone |
| 04/22/2009 | CN201226593Y Silicon microphone capable of being welding on two sides |
| 04/22/2009 | CN201226592Y Silicon microphone packaged by flexible circuit board |
| 04/22/2009 | CN201226591Y 电容式麦克风 Condenser Microphone |
| 04/22/2009 | CN201226590Y 麦克风 Microphone |
| 04/22/2009 | CN101415137A Capacitance type microphone |
| 04/16/2009 | WO2008079467A3 Microphone array with electromagnetic interference shielding means |
| 04/16/2009 | WO2006134580A3 Micro-electro-mechanical transducer having an insulation extension |
| 04/16/2009 | DE102008046860A1 Mikrohergestellter akustischer Transducer mit einer Mehrschichtelektrode The fabricated micro-acoustic transducer with a multilayer electrode |
| 04/15/2009 | CN201222803Y Digitalization electret microphone for inverse flow weld |
| 04/15/2009 | CN101409857A Application of conductive silver glue for electret capacitor microphone |
| 04/15/2009 | CN101409856A Vibration transducer |
| 04/15/2009 | CN101409536A Thin-film acoustic resonator and method of producing the same |
| 04/09/2009 | WO2009045170A1 Silicon microphone with enhanced impact proof structure using bonding wires |
| 04/09/2009 | US20090092274 Silicon condenser microphone having additional back chamber and sound hole in pcb |
| 04/08/2009 | EP2046072A2 A microphone assembly with a replaceable part |
| 04/08/2009 | EP2001262A9 Capacitor microphone |
| 04/08/2009 | EP1649718A4 Surface mountable electret condenser microphone |
| 04/08/2009 | CN101406069A Condenser microphone |
| 04/02/2009 | US20090087002 Electrostatic speaker |
| 04/01/2009 | EP2043386A2 Electrostatic speaker |
| 04/01/2009 | EP2043385A2 Vibration transducer and manufacturing method therefor |
| 04/01/2009 | CN201216022Y Needle insertion type electret microphone |
| 04/01/2009 | CN201216021Y Digital contact type vibration acoustic pickup |
| 04/01/2009 | CN201216020Y Reflux-resisting welded microphone |
| 04/01/2009 | CN201216019Y Unidirectional digital microphone |
| 04/01/2009 | CN201216018Y Small reflux-resisting welded microphone |
| 04/01/2009 | CN101401449A Monitor transducer system and manufacturing method thereof |
| 04/01/2009 | CN101400013A Electrostatic speaker |
| 04/01/2009 | CN101400012A Vibration transducer and manufacturing method therefore |
| 04/01/2009 | CN101400008A Driving circuit for electrostatic loudspeaker and method |
| 04/01/2009 | CN100474942C Transducer |
| 04/01/2009 | CN100473960C Vibration sensor |
| 03/31/2009 | US7512038 Ultrasonic transducer and manufacturing method |
| 03/26/2009 | US20090080683 Wireless headset with microphone boom with new bending properties |
| 03/26/2009 | US20090080682 Electret condenser microphone |
| 03/26/2009 | US20090080292 Microfabricated acoustic transducer with a multilayer electrode |
| 03/25/2009 | EP1332643A4 An electret condenser microphone |
| 03/25/2009 | CN201213316Y Circuit module for capacitor type microphone |
| 03/25/2009 | CN101395958A Method of detecting and deterring microphone sabotage |
| 03/25/2009 | CN101395957A Electrostatic loudspeakers |
| 03/25/2009 | CN101395956A Sound sponge for loudspeakers |
| 03/25/2009 | CN101394687A Microphone with silicon capacitor |
| 03/25/2009 | CN101394686A Miniature microphone assembly with hydrophobic surface coating |
| 03/25/2009 | CN101394685A Microfabricated acoustic transducer with a multilayer electrode |
| 03/19/2009 | WO2009034786A1 Condenser microphone |
| 03/19/2009 | US20090074211 Capacitor microphone and method for manufacturing capacitor microphone |
| 03/18/2009 | EP2037700A2 Miniature microphone assembly with hydrophobic surface coating |
| 03/18/2009 | CN201210745Y Microphone with micropores |
| 03/18/2009 | CN201210744Y Miniature capacitor type microphone |
| 03/18/2009 | CN101389156A Impedance convertor having antistatic and wave-filtering functions for electronic capatitance micphone |
| 03/18/2009 | CN101389155A Silicon wafer capacitor microphone |
| 03/12/2009 | WO2009031742A1 Condenser microphone using the ceramic package whose inside is encompassed by metal or conductive materials |
| 03/12/2009 | US20090067648 Structure and manufactruring method of electrostatic speaker |
| 03/11/2009 | EP2032501A2 Nano-microphone or pressure sensor |
| 03/11/2009 | CN201207732Y Concealed fixing type electret microphone and earphone |
| 03/11/2009 | CN201207731Y Microphone and microphone array system |
| 03/11/2009 | CN201207730Y Ultra-thin miniature microphone |
| 03/11/2009 | CN201207729Y Seat integrated case and capacitive microphone using the case |
| 03/11/2009 | CN101385392A MEMS device |
| 03/11/2009 | CN101384102A Electrostatic electroacoustic transducers |
| 03/11/2009 | CN101384101A Ultrasound sensor and a method using the sensor |
| 03/11/2009 | CN101381069A Condenser microphone using the ceramic package whose inside is encompassed by metal or conductive materials |
| 03/10/2009 | US7502482 Membrane and method for the production of the same |
| 03/10/2009 | US7501703 Acoustic transducer module |
| 03/05/2009 | US20090060234 Speaker structure |
| 03/05/2009 | US20090060230 Electromechanical transducer and a production method |
| 03/05/2009 | DE102007042384A1 Molded part e.g. molded headliner, manufacturing method for motor vehicle, involves inserting electrostatic flat surface loudspeaker into recess, and deeply injecting blank with inserted loudspeaker by knitwear |
| 03/05/2009 | DE102007041850A1 Ultraschallsensor mit einem Trägerelement und einer Membran, wobei die Membran in das Trägerelement eingebettet ist Ultrasonic sensor with a carrier element and a membrane, wherein the membrane is embedded in the carrier element |
| 03/04/2009 | EP2030698A1 Ultrasonic transducer, method of manufacturing ultrasonic transducer, ultrasonic diagnostic apparatus, and ultrasonic microscope |
| 03/04/2009 | EP2029474A1 Micromechanic component and method for the production thereof |
| 03/04/2009 | CN201204695Y 驻极体麦克风 Electret microphone |
| 03/04/2009 | CN201204694Y Capacitance microphone |
| 03/04/2009 | CN201204693Y 数字麦克风 Digital Microphone |
| 03/04/2009 | CN101379373A Electret capacitor type composite sensor |
| 03/04/2009 | CN101378605A Ultrasonic transducer, method of manufacturing ultrasonic transducer, ultrasonic diagnostic apparatus, and ultrasonic microscope |
| 02/25/2009 | CN101375628A Electronic device and sound reproducing method |
| 02/25/2009 | CN101374373A Vibration sensor |
| 02/25/2009 | CN101374372A Semiconductor device |
| 02/24/2009 | US7493899 Microphone adaptor for a respirator |
| 02/19/2009 | WO2009022459A1 Microphone apparatus and manufacturing method thereof |
| 02/19/2009 | WO2008111011A3 Mems microphone |
| 02/19/2009 | US20090046882 Microphone Apparatus |
| 02/19/2009 | DE102007037561A1 Schallwandler zur Übertragung von Audiosignalen Transducer for transmitting audio signals |
| 02/18/2009 | CN201197190Y Novel electret microphone |
| 02/18/2009 | CN201197189Y Novel electret microphone |
| 02/18/2009 | CN201197188Y Capacitance microphone assembly part reducing stray capacitance |
| 02/18/2009 | CN201197187Y Vibration plate forming air groove and capacitance microphone using the same |
| 02/18/2009 | CN201195694Y Micro-electronmechanical microphone packaging system |
| 02/12/2009 | US20090041283 Audio signal transmission/reception device |
| 02/11/2009 | EP2023659A2 Electrostatic speaker |
| 02/11/2009 | EP2023658A2 Semiconductor device, lead frame, and microphone package therefor |
| 02/11/2009 | EP2022290A1 Mounting method and holder for smd microphone |
| 02/11/2009 | EP2021739A1 Capacitive mems sensor device |