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Class Information
Number: 367/181
Name: Communications, electrical: acoustic wave systems and devices > Signal transducers > Receivers > Capacitive
Description: Subject matter comprising an electrical capacitor whose electrical parameters are varied by changes in its mechanical parameters brought about by acoustic wave energy.










Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8665672 Process for producing capacitive electromechanical conversion device, and capacitive electromechanical conversion device Mar. 4, 2014
8654614 Capacitive electromechanical transducer Feb. 18, 2014
8637945 Component having a micromechanical microphone structure, and method for its production Jan. 28, 2014
8627725 Capacitance type vibration sensor Jan. 14, 2014
8555483 Method of manufacturing a vibrating element Oct. 15, 2013
8559274 Dual-mode operation micromachined ultrasonic transducer Oct. 15, 2013
8531919 Flexible capacitive micromachined ultrasonic transducer array with increased effective capacitance Sep. 10, 2013
8526271 Capacitive micromachined ultrasonic transducer with voltage feedback Sep. 3, 2013
8483014 Micromachined ultrasonic transducers Jul. 9, 2013
8456958 Capacitive micro-machined ultrasonic transducer for element transducer apertures Jun. 4, 2013
8451693 Micromachined ultrasonic transducer having compliant post structure May. 28, 2013
8451694 Ultrasonic sensor unit and electronic device May. 28, 2013
8398554 Harmonic cMUT devices and fabrication methods Mar. 19, 2013
8372011 Asymmetric membrane cMUT devices and fabrication methods Feb. 12, 2013
8368153 Wafer level package of MEMS microphone and manufacturing method thereof Feb. 5, 2013
8363514 Variable operating voltage in micromachined ultrasonic transducer Jan. 29, 2013
8345512 Capacitive micromachined ultrasonic transducer (cMUT) device and method of controlling the same Jan. 1, 2013
8345513 Stacked transducing devices Jan. 1, 2013
8294225 Ultrasonic transducer and manufacturing method Oct. 23, 2012
8256093 Method of manufacturing an acoustic mirror Sep. 4, 2012
8247945 Micro-electro-mechanical transducers Aug. 21, 2012
8248889 Ultrasound diagnostic apparatus Aug. 21, 2012
8218286 MEMS microphone with single polysilicon film Jul. 10, 2012
8203912 CMUTs with a high-k dielectric Jun. 19, 2012
8169855 Ultrasonic sensor unit and electronic device May. 1, 2012
8117919 Micro-electro-mechanical system device Feb. 21, 2012
8120229 Middle spring supported micro-electro-mechanical transducers Feb. 21, 2012
8103025 Surface mountable transducer system Jan. 24, 2012
8089828 Acoustic sensor element Jan. 3, 2012
8045733 Silicon microphone with enhanced impact proof structure using bonding wires Oct. 25, 2011
8026651 Ultrasound transducer and electronic device Sep. 27, 2011
8014231 Digital capacitive membrane transducer Sep. 6, 2011
7995423 Ultrasound transducer and ultrasound diagnostic apparatus Aug. 9, 2011
7982369 Ultrasonic probe and ultrasonic diagnostic apparatus Jul. 19, 2011
7971337 Method for producing a microphone module for a hearing aid device Jul. 5, 2011
7949143 Ultrasonic transducer, ultrasonic speaker, acoustic system, and control method of ultrasonic transducer May. 24, 2011
7944114 Ultrasonic transducer device and ultrasonic wave probe using same May. 17, 2011
7940603 Ultrasonic transducer cell May. 10, 2011
RE42346 Solid state silicon-based condenser microphone May. 10, 2011
RE42347 Solid state silicon-based condenser microphone May. 10, 2011
7925033 Electro-acoustic transducer Apr. 12, 2011
7905006 Method of manufacturing faceplate for in-the-ear hearing aid Mar. 15, 2011
7839722 Microfabricated acoustic transducer with a multilayer electrode Nov. 23, 2010
7800981 High efficiency portable seismograph for measuring seismic tremor Sep. 21, 2010
7793404 Resonant-oscillating-device fabrication method Sep. 14, 2010
7779696 Separate cMUTs for reception and transmission Aug. 24, 2010
7778113 Ultrasonic transducer and manufacturing method thereof Aug. 17, 2010
7727156 Dual frequency band ultrasound transducer arrays Jun. 1, 2010
7669310 Method of manufacturing an acoustic mirror Mar. 2, 2010
7626891 Capacitive ultrasonic transducer and method of fabricating the same Dec. 1, 2009

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