Patents
Sitemap › H04 - Electric communication technique › H04R - Loudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducers; Deaf-aid sets; Public address systems › H04R 19 - Electrostatic transducers
Patents for H04R 19 - Electrostatic transducers (5,387)
04/2003
04/10/2003US20030068059 Microphone having a flexible printed circuit board for mounting components
04/10/2003US20030068055 Electret microphone
04/09/2003CN1409576A Electroacoustic transducer
04/08/2003US6545384 Electroactive polymer devices
04/08/2003US6543110 Electroactive polymer fabrication
04/03/2003US20030063768 Microphone for a hearing aid or listening device with improved dampening of peak frequency response
04/03/2003US20030063762 Chip microphone and method of making same
04/02/2003EP1298958A2 Microphone for a hearing aid or listening device with improved internal dampening and foreign material protection
03/2003
03/27/2003US20030057068 Port Switch as for a hearing aid device
03/26/2003EP1296536A2 Electroacoustic transducer
03/26/2003EP1294494A2 Capacitive micromachined ultrasonic transducers
03/26/2003EP1294493A2 Capacitive micromachined ultrasonic transducers.
03/20/2003WO2003023422A1 Capacitance measuring circuit, capacitance measuring instrument, and microphone device
03/20/2003US20030053649 Electroacoustic transducer
03/20/2003US20030052570 Electromechanic film and acoustic element
03/20/2003US20030052355 Integrated sound transmitter and receiver, and corresponding method for making same
03/18/2003US6535612 Electroacoustic transducer with diaphragm securing structure and method
03/18/2003US6535460 Miniature broadband acoustic transducer
03/12/2003EP1292171A2 Chip microphone and method of making same
03/11/2003US6532293 Acoustical transducer with reduced parasitic capacitance
03/06/2003DE20219717U1 Electret microphone module e.g. for digital cordless and mobile telephones, comprises connectors located symmetrically to radial diameter plane of cylindrical base body
03/05/2003CN1400846A Capacitor microphone and its making process
02/2003
02/20/2003US20030035558 Acoustic sensor, its manufacturing method, and semiconductor electret condenser microphone using the same acoustic sensor
02/20/2003US20030034536 Micromachined capacitive electrical component
02/19/2003CN1398500A Noise-resistant microphone
02/18/2003US6522762 Silicon-based sensor system
02/13/2003WO2003011748A2 Micro-machined ultrasonic transducer (mut) substrate that limits the lateral propagation of acoustic energy
02/12/2003EP1283003A1 System consisting of a microphone and an amplifier
02/06/2003US20030028106 Micro-machined ultrasonic transducer ( MUT) substrate that limits the lateral propagation of acoustic energy
02/06/2003US20030026444 Microphone for a listening device having a reduced humidity coefficient
02/06/2003US20030026443 Condenser microphone and production method thereof
02/05/2003EP1282339A2 Condenser microphone and production method thereof
02/04/2003US6516069 Microphone filter and microphone unit
01/2003
01/30/2003WO2003009635A2 Loudspeaker system
01/30/2003US20030021432 Micromachined capacitive component with high stability
01/30/2003US20030021425 Anti-noise pick-up
01/29/2003CN1394457A Transducer
01/28/2003US6512833 Electret condenser microphone and method of producing same
01/23/2003US20030016839 Raised microstructure of silicon based device
01/21/2003US6510231 Electroacoustic transducer
01/09/2003US20030007659 Acoustic element
01/09/2003US20030007655 Electret condenser microphone
01/09/2003US20030007650 Capacitor microphone
01/08/2003EP1273203A1 Method of manufacturing a membrane sensor
01/08/2003CN1390433A Electroacoustic transducer with diapharagm securing structure and method
01/08/2003CN1390432A Anti-noise pickup
01/02/2003EP1267710A1 Sensor system for monitoring the condition of a person and method for its manufacture
12/2002
12/25/2002CN1387741A Silicon-based sensor system
12/25/2002CN1387740A Pressure transducer
12/25/2002CN1387350A Electrostatic microphone
12/24/2002US6498854 Transducer for sensing body sounds
12/19/2002US20020191808 Single-ended planar-magnetic speaker
12/19/2002US20020190814 Thin film bulk acoustic resonator and method of producing the same
12/18/2002CN1386037A Capacitance microphone and method for making same
12/18/2002CN1386036A Internal inolation for electro-acoustic carbon box
12/18/2002CN1385997A Electret capacitance microphone and making method thereof
12/18/2002CN1385995A 驻极体话筒 Electret microphone
12/12/2002WO2002063922A3 Improved single-ended planar-magnetic speaker
12/11/2002EP1264512A1 Microphone structure
12/05/2002WO2002098166A1 A method of providing a hydrophobic layer and a condenser microphone having such a layer
12/05/2002US20020181725 Method of providing a hydrophobic layer and a condenser microphone having such a layer
11/2002
11/27/2002EP1261234A2 Condenser microphone and method for manufacturing condenser microphones
11/27/2002EP1261233A1 An anti-noise pick-up
11/27/2002EP0775434A4 Acoustic transducer with improved low frequency response
11/21/2002WO2002093549A1 Thin film acoustic resonator and method of manufacturing the resonator
11/21/2002US20020172389 Electrostatic Microphone
11/21/2002US20020172388 Microphone set
11/21/2002US20020172387 Microphone assembly
11/21/2002US20020172385 Electret microphone
11/21/2002US20020172384 Semiconductor electret capacitor microphone
11/21/2002US20020172383 Condenser microphone and method for manufacturing condenser microphones
11/21/2002US20020172382 Pressure responsive device and method of manufacturing semiconductor substrate for use in pressure responsive device
11/21/2002US20020171636 Sound and vision system
11/21/2002DE10122912A1 Vorrichtung und Verfahren zum Erzeugen einer vorbestimmten Positionsbeziehung zweier zueinander beweglicher Elektroden Apparatus and method for generating a predetermined positional relationship of two relatively movable electrodes
11/20/2002EP1259096A2 Internal insulation of an electroacoustic capsule
11/20/2002EP1259095A2 Electrostatic microphone
11/20/2002EP1259094A2 Electret microphone
11/20/2002EP1258167A2 Acoustic transducer with improved acoustic damper
11/20/2002CN1381156A Electret condenser microphone
11/19/2002US6483924 Acoustic elements and method for sound processing
11/14/2002WO2002091796A2 Surface micromachined process for manufacturing electroacoustic transducers
11/14/2002US20020168080 Inner insulation for electroacoustic capsules
11/14/2002US20020168076 Condenser microphone
11/14/2002US20020168073 Electret condenser microphone and method of producing same
11/13/2002EP1257150A2 Electret condenser microphone and method of producing same
11/13/2002EP1257149A1 Movable eletrostatic electrode beyond its instability ( pull-in ) by switched current source
11/12/2002US6479878 Semiconductor device and semiconductor electret condenser microphone
11/06/2002EP1254586A2 Acoustical transducer with reduced parasitic capacitance and method of manufacturing same
11/06/2002EP1254585A2 Miniature microphone
10/2002
10/24/2002WO2002085065A1 Electromechanical transducer and method for transforming energies
10/24/2002WO2002015636A3 Miniature broadband transducer
10/24/2002WO2001059852A9 Monolithic electroactive polymers
10/24/2002US20020154790 Cylindrical microphone having an electret assembly in the end cover
10/23/2002EP1251713A2 Cylindrical microphone having an electret assembly in the end cover
10/23/2002EP1250827A2 Transducer
10/17/2002WO2002082858A2 Sound and vision system
10/09/2002EP1247350A1 Parametric audio system
10/03/2002WO2002077702A1 Display substrate with an integrated acoustic transducer
10/03/2002US20020141606 Power supply assembly
10/02/2002CN1372431A Electroacoustic telephone transmitter
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