| Patents for H04R 19 - Electrostatic transducers (5,387) |
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| 02/03/2011 | US20110026752 Miniature microphone, protection frame thereof and method for manufacturing the same |
| 02/03/2011 | US20110025170 Electroactive polymer device |
| 02/02/2011 | EP2280558A1 Integrated circuit device, sound inputting device and information processing system |
| 02/02/2011 | EP2280412A2 Semiconductor substrate comprising at least a buried insulating cavity |
| 02/02/2011 | CN201733432U Silicon-based microphone and vibrating membrane thereof |
| 02/02/2011 | CN1883020B Electret and electret capacitor |
| 02/02/2011 | CN101964936A Processing chip for digital microphone, input circuit thereof and digital microphone |
| 02/02/2011 | CN101039533B Method for manufacturing vibration diagram of electret microphone |
| 02/01/2011 | US7881489 Ultrasonic transducer and ultrasonic speaker using the same |
| 02/01/2011 | US7881484 Capacitor microphone |
| 01/27/2011 | DE102006055147B4 Schallwandlerstruktur und Verfahren zur Herstellung einer Schallwandlerstruktur Transducer structure and method of making a transducer structure |
| 01/26/2011 | CN201726530U Electret electro-acoustic transduction device |
| 01/26/2011 | CN201726529U Vehicle-mounted touch control type loudspeaker |
| 01/26/2011 | CN1926919B Electret capacitor microphone |
| 01/26/2011 | CN1882194B Module of built-in multi-microphone |
| 01/26/2011 | CN101959109A Micro-electro-mechanical-system microphone |
| 01/26/2011 | CN101959108A Miniature microphone |
| 01/26/2011 | CN101959107A MEMS (Micro Electro Mechanical Systems) microphone |
| 01/26/2011 | CN101959106A Packaging structure of microphone of micro electromechanical system and packaging method thereof |
| 01/26/2011 | CN101959105A Electrostatic loudspeaker |
| 01/26/2011 | CN101959103A Vibrating diaphragm and microphone comprising vibrating diaphragm |
| 01/26/2011 | CN101959094A Electret speaker impedance converter |
| 01/20/2011 | WO2011007619A1 Waterproof microphone |
| 01/18/2011 | US7873176 Electrostatic microphone |
| 01/13/2011 | US20110007913 Magnet assembly for a loudspeaker |
| 01/13/2011 | DE112008003381T5 Filterschaltung für ein Electretmikrophon Filter circuit for a electret microphone |
| 01/12/2011 | CN201708922U Electret condenser microphone |
| 01/12/2011 | CN101945319A Condenser microphone |
| 01/12/2011 | CN101941669A MEMS sensor, silicon microphone, and pressure sensor |
| 01/06/2011 | WO2011001405A1 Transducer with resonant cavity |
| 01/05/2011 | EP2271135A2 Condenser microphone |
| 01/05/2011 | EP2271134A1 Proximity sensor comprising an acoustic transducer for receiving sound signals in the human audible range and for emitting and receiving ultrasonic signals. |
| 01/05/2011 | EP2271133A1 Acoustic positioning system with MEMS microphones |
| 01/05/2011 | EP2271129A1 Transducer with resonant cavity |
| 01/05/2011 | EP2270979A1 Preamplifier circuit for a microelectromechanical capacitive acoustic transducer |
| 01/05/2011 | EP2269384A1 Directing sound field of actuator |
| 01/05/2011 | EP2269382A1 Composite microphone, microphone assembly and method of manufacturing those |
| 01/05/2011 | CN201699978U Capacitive miniature silicon microphone |
| 01/05/2011 | CN201699977U Combined electret capacitance microphone |
| 01/05/2011 | CN101940002A Microphone unit |
| 01/05/2011 | CN101940001A Microphone unit |
| 01/05/2011 | CN101938682A Micro-electromechanical system microphone |
| 01/05/2011 | CN101935007A Acoustic sensor packaging structure for micro electro mechanical system |
| 12/29/2010 | EP2266795A1 Electret and electrostatic induction conversion device |
| 12/29/2010 | EP2266792A1 Electret and electrostatic induction conversion device |
| 12/29/2010 | EP2266327A1 Condenser microphone |
| 12/29/2010 | CN201690596U Silicon-based microphone |
| 12/29/2010 | CN201690595U Microphone |
| 12/29/2010 | CN201690594U Capacitor-type microphone shell |
| 12/29/2010 | CN201690593U Microphone |
| 12/29/2010 | CN1764325B Microphone attachment device |
| 12/29/2010 | CN101933343A An electrostatic speaker system |
| 12/22/2010 | EP2264801A2 Electroactive polymers |
| 12/22/2010 | CN201682615U Capacitive microphone |
| 12/22/2010 | CN201682614U Electret condenser microphone |
| 12/22/2010 | CN101924976A Condenser microphone unit |
| 12/15/2010 | CN1764328B Dynamic pressure sensing structure |
| 12/15/2010 | CN101919271A Filter circuit for an electret microphone |
| 12/14/2010 | US7853027 Electret condenser |
| 12/09/2010 | WO2010140312A1 Microphone |
| 12/09/2010 | WO2010140106A1 Capacitive sensing system |
| 12/09/2010 | WO2010139498A1 Component having a micro-mechanic microphone structure and method for producing same |
| 12/09/2010 | DE102009026682A1 Bauelement mit einer mikromechanischen Mikrofonstruktur und Verfahren zu dessen Herstellung Component having a micromechanical microphone structure and process for its preparation |
| 12/09/2010 | DE102009026677A1 Halbleiterbauelement mit einer mikromechanischen Mikrofonstruktur A semiconductor device comprising a micromechanical microphone structure |
| 12/09/2010 | DE102009026629A1 Micromechanical system for use in microphone, comprises thin structured polysilicon layers between substrate and micromechanical functional layer, where one of polysilicon layer has stabilizing bar |
| 12/08/2010 | CN101911729A Electret capacitor microphone |
| 12/08/2010 | CN101909235A Capacitance type microphone without electret layer |
| 12/02/2010 | WO2010137528A1 Ultrasonic transducer and ultrasonic diagnostic apparatus provided with same |
| 12/02/2010 | US20100303272 Boundary microphone and desktop electro-acoustic transducer |
| 12/02/2010 | US20100303271 Silicon microphone package |
| 12/01/2010 | EP2256761A1 Electret and electrostatic induction conversion device |
| 12/01/2010 | CN201663687U Capacitance type micro-silicon microphone |
| 12/01/2010 | CN201663622U Mobile terminal |
| 12/01/2010 | CN101902678A Silicon microphone package |
| 11/30/2010 | US7844069 Microphone mounting system for acoustic stringed instruments |
| 11/25/2010 | WO2010135280A2 Microphone having reduced vibration sensitivity |
| 11/25/2010 | WO2010134244A1 Converter module and method for manufacturing same |
| 11/25/2010 | WO2010133782A1 Acoustic wave generation device and equipment including a plurality of such devices |
| 11/24/2010 | CN201657313U Zero-height noise-reducing electret condenser microphone with integrated vibrating diaphragm and backing electrode |
| 11/24/2010 | CN201657312U Condenser microphone |
| 11/24/2010 | CN201657311U Single-pointed-direction capacitance type microphone |
| 11/24/2010 | CN201657310U Mems microphone |
| 11/24/2010 | CN201657309U Silicon microphone |
| 11/24/2010 | CN201657308U Easily-assembled capacitance type electroacoustic device |
| 11/23/2010 | US7839722 Microfabricated acoustic transducer with a multilayer electrode |
| 11/23/2010 | US7839052 Sensing membrane with stress releasing structure and micro-electro-mechanical system device using the same |
| 11/18/2010 | DE102009019707A1 Speisevorrichtung zur Speisung eines Mikrofons Supply device for supplying a microphone |
| 11/17/2010 | EP2252077A1 Assembly of a capacitive acoustic transducer of the microelectromechanical type and package thereof |
| 11/17/2010 | EP2252075A1 Microphone unit |
| 11/17/2010 | EP1421823B1 Surface micromachined process for manufacturing electroacoustic transducers |
| 11/17/2010 | CN201639774U Unidirectional microphone |
| 11/17/2010 | CN201639773U Capacitance microphone |
| 11/17/2010 | CN201639772U 麦克风 Microphone |
| 11/17/2010 | CN201639771U Capacitance microphone |
| 11/17/2010 | CN201639770U Capacitance microphone |
| 11/17/2010 | CN101888585A Unidirectional capacitive microphone |
| 11/17/2010 | CN101888584A Silicon microphone |
| 11/17/2010 | CN101888583A Earphone provided with capacitive actuator |
| 11/11/2010 | US20100284553 Assembly of a capacitive acoustic transducer of the microelectromechanical type and package thereof |
| 11/10/2010 | EP2249583A2 Miniature silicon condenser microphone and method for producing same |