Patents
Sitemap › H04 - Electric communication technique › H04R - Loudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducers; Deaf-aid sets; Public address systems › H04R 17 - Piezo-electric transducers; Electrostrictive transducers
Patents for H04R 17 - Piezo-electric transducers; Electrostrictive transducers (7,213)
08/2003
08/07/2003US20030149363 Diagnostic medical ultrasound systems and transducers utilizing micro-mechanical components
08/07/2003US20030149362 Ultrasonic imaging apparatus and method
08/06/2003EP1075777B1 Transducer backing material and method of application
08/06/2003CN1434985A Electro-active device
08/05/2003US6603240 Sensor array, method for manufacturing sensor array, and ultrasonic diagnostic apparatus using the same
08/05/2003US6602197 Ultrasonic probe
08/05/2003US6601276 Method for self alignment of patterned layers in thin film acoustic devices
08/05/2003CA2251395C Moulded transducer
07/2003
07/31/2003WO2003061853A2 Cylindrical ultrasound transceivers
07/31/2003WO2002062096A3 Electroacoustic conversion of audio signals, especially voice signals
07/31/2003US20030141783 Array of ultrasound transducers
07/31/2003CA2473664A1 Cylindrical ultrasound transceivers
07/30/2003CN1433662A Electromechanical transducer
07/30/2003CN1433661A Piezoelectric film sonic emitter
07/30/2003CN1433092A Manufacture of laminated piezoelectric ceramic element
07/24/2003WO2003061334A2 Wave flextensional shell configuration
07/24/2003WO2002096508A3 Ultrasound feedback in medically-treated patients
07/24/2003US20030138121 Ultrasonic converter unit having electrodes made of electrically-conductive plastic
07/24/2003US20030137224 Cylindrical ultrasound transceivers
07/23/2003EP1329875A2 Ultrasound transducer with electrically conducting plastic electrodes
07/23/2003EP1186203B1 Bending wave acoustic device
07/23/2003EP0935741B1 Surface micro-mechanic ultrasonic transducer with integrated control circuit, and array
07/23/2003CN1115661C Supersonic Sensor and its mfg. method
07/17/2003US20030134156 High density piezoelectric thick film and manufacturing method thereof
07/16/2003CN1430794A Electroacoustic converter
07/15/2003US6593680 Ultrasonic wave transmitter/receiver
07/15/2003US6592512 At least partially implantable system for rehabilitation of a hearing disorder
07/10/2003US20030128628 Wave flextensional shell configuration
07/10/2003US20030127947 Multi-piezoelectric layer ultrasonic transducer for medical imaging
07/09/2003EP1324702A1 Intravascular ultrasonic catheter
07/09/2003CN1428206A Ultrasonic transducer chip with variable acoustic impedance
07/08/2003US6590992 Speaker device
07/03/2003US20030121331 Ultrasonic transceiver and ultrasonic clearance sonar using the same
07/02/2003EP1172018B1 Hearing aid compatible piezoelectric speaker
07/01/2003US6587567 Piezoelectric electroacoustic transducer
07/01/2003US6586702 High density pixel array and laser micro-milling method for fabricating array
07/01/2003US6585653 Micro-machined ultrasonic transducer (MUT) array
07/01/2003US6584660 Method of manufacturing a piezoelectric device
06/2003
06/26/2003US20030118198 Biaxial parametric speaker
06/26/2003US20030118195 Broad-band echo sounder
06/25/2003EP1322137A2 Portable speaker systems and applications thereof
06/25/2003EP1322135A2 Flat panel sound radiator with enhanced audio performance
06/24/2003US6583533 Electroactive polymer electrodes
06/17/2003US6580799 Keyboard comprising a loudspeaker
06/17/2003US6578245 Method of making a print head
06/12/2003US20030109786 Ultrasonic probe
06/12/2003US20030107302 Piezoelectric element and an oscillation transducer with a piezoelectric element
06/12/2003US20030107300 Piezoelectric electroacoustic transducer
06/10/2003US6575909 Ultrasound probe having transducer elements with different frequency centers
06/05/2003WO2003045586A1 Ultrasonic transducer and method of joining an ultrasonic transducer
06/05/2003US20030102777 Ultrasonic transducer and method of manufacturing the same
06/04/2003CN1422102A 压电扬声器 Piezoelectric speaker
06/04/2003CN1110862C Thin film piezoelectric array with enhanced coupling and fabrication method thereof
06/03/2003US6572552 Ultrasonic diagnostic apparatus
05/2003
05/30/2003WO2003045111A1 Piezoelectric body manufacturing method, piezoelectric body, ultrasonic probe, ultrasonic diagnosing device, and nondestructive inspection device
05/30/2003WO2003009635A3 Loudspeaker system
05/30/2003CA2467686A1 Piezoelectric body manufacturing method, piezoelectric body, ultrasonic probe, ultrasonic diagnosing device, and nondestructive inspection device
05/29/2003US20030099371 Piezoelectric speaker
05/29/2003US20030098632 Matrix type piezoelectric/electrostrictive device and manufacturing method thereof
05/28/2003CN1419895A Piezoelectric sensor, method for mfg. same, and pulse wave detector
05/27/2003US6570299 Piezoelectric electroacoustic transducer and manufacturing method of the same
05/22/2003WO2003042687A1 Ultrasonic probe
05/22/2003US20030095678 Loudspeaker using an electro-active device
05/21/2003EP1312424A2 Piezoelectric transducer, manufacturing method of piezoelectric transducer and pulse wave detector
05/20/2003US6567342 Flared wave-guide projector
05/20/2003US6566265 Method of working piezoelectric substance and method of manufacturing composite piezoelectric substance
05/20/2003CA2266362C Vehicular loudspeaker system
05/16/2003CA2411598A1 Piezoelectric transducer, manufacturing method of piezoelectric transducer and pulse wave detector
05/15/2003WO2003039381A1 Ultrasonic probe device having an impedance mismatch with rapid attachment and detachment means
05/15/2003WO2002096506A8 Tissue-retaining system for ultrasound medical treatment
05/15/2003US20030092988 Staging medical treatment using ultrasound
05/15/2003CA2462499A1 Ultrasonic probe device having an impedance mismatch with rapid attachment and detachment means
05/14/2003CN1418135A Unidirectional acoustic probe and method for making same
05/14/2003CN1418040A Hydrophone with automatic supression function beyond the adjustable immersion threshold
05/13/2003US6563930 Speaker
05/13/2003US6563254 Inertial/audio unit and construction
05/13/2003US6562650 Microfabricated transducers formed over other circuit components on an integrated circuit chip and methods for making the same
05/08/2003WO2003038919A1 Piezoelectric devices
05/08/2003WO2002091492A3 Electrostrictive bending transducer
05/08/2003US20030086337 Hydrophone with automatic inhibition in case an adjustable immersion threshold is exceeded
05/08/2003US20030085635 Multidimensional ultrasonic transducer arrays
05/08/2003US20030084561 Method of manufacturing bolt-tightened langevin type transducer
05/07/2003EP1309223A2 Piezoelectric film loudspeaker
05/06/2003US6560345 Microphone
05/06/2003US6558332 Array type ultrasonic probe and a method of manufacturing the same
05/06/2003US6558331 Apparatus and method for harmonic imaging using an array transducer operated in the k31 mode
05/01/2003US20030083573 Ultrasonic probe, ultrasonic imaging apparatus and ultrasonic imaging method
05/01/2003US20030081802 Piezoelectric film loudspeaker
05/01/2003US20030081799 Flat panel sound radiator with enhanced audio performance
05/01/2003US20030081798 Driving unit for tranceducer
05/01/2003US20030079600 Arrangement of a rythmic apparatus with a vehicle sound apparatus, rhythmic accompaniment method and electronic transducer
04/2003
04/30/2003CA2405583A1 Flat panel sound radiator with enhanced audio performance
04/29/2003US6554761 Flextensional microphones for implantable hearing devices
04/24/2003WO2003034022A1 Sound simulator and sound simulating method
04/24/2003US20030076599 System and method for acoustic imaging at two focal lengths with a single lens
04/23/2003CN1413002A Piezoelectric electroacoustic converter
04/22/2003US6552471 Multi-piezoelectric layer ultrasonic transducer for medical imaging
04/22/2003US6551248 System for attaching an acoustic element to an integrated circuit
04/22/2003US6551245 Ultrasonic probe
04/17/2003WO2003030777A2 Ultrasonic probe device with rapid attachment and detachment means having a line contact collet
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