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)
12/1995
12/26/1995US5477729 Acoustic emission transducer
12/21/1995WO1995034917A1 Cantilever pressure transducer
12/20/1995EP0687445A2 Ultrasonic probe
12/19/1995US5477101 Downhole acoustic transducer
12/14/1995DE4419953A1 Piezoelectric composite receiver for use in telephones
12/14/1995DE4419933A1 Piezoelectric polymer film acoustic generator for active cancellation
12/07/1995WO1995033258A1 Process and device for generating spherical waves in the ultrasound range
12/07/1995CA2191695A1 Process and device for generating spherical waves in the ultrasound range
12/06/1995EP0685985A2 Piezoelectric loudspeaker and method for manufacturing the same
12/06/1995EP0670051A4 Diffractive display utilizing reflective or transmissive light yielding single pixel full color capability.
12/06/1995CN1113009A Proximity sensor utilizing polymer piezoelectric film
11/1995
11/30/1995WO1995032602A1 Sound generating device
11/30/1995CA2167318A1 Sound generating device
11/22/1995EP0682989A2 Elevation aperture control of an ultrasonic transducer
11/22/1995CN1112375A Diffractive display utilizing reflective or transmissive light yielding single pixel full color capability
11/21/1995US5469511 Method and apparatus for presentation of on-line directional sound
11/21/1995US5469012 Electronic component
11/15/1995EP0681513A1 Manufacturing method of an mechanically focusing ultrasonic transducer array
11/09/1995WO1995030321A1 Resonance damper for piezoelectric transducer
11/09/1995CA2189002A1 Resonance damper for piezoelectric transducer
11/02/1995EP0679907A2 Short distance ultrasonic distance meter
10/1995
10/25/1995EP0527963B1 Loading of flextensional transducer shells
10/24/1995US5460181 Ultrasonic transducer for three dimensional imaging
10/24/1995US5460179 For examining a patient
10/24/1995CA2033318C Super high frequency oscillator/resonator
10/19/1995WO1995022878A3 A background noise reducing microphone
10/11/1995EP0676742A2 Integrated matching layer for ultrasonic transducers
10/10/1995US5457353 For use in a glass-break signaling configuration
10/10/1995US5457352 Ultrasonic converter
10/10/1995US5456259 Ultrasonic transducer arrangement and catheter
09/1995
09/13/1995EP0671862A1 A bifunctional earphone set
09/13/1995EP0671772A1 Ceramic diaphragm structure having convex diaphragm portion and method of producing the same
09/06/1995EP0670051A1 Diffractive display utilizing reflective or transmissive light yielding single pixel full color capability
08/1995
08/30/1995EP0669169A2 Wave-receiving piezoelectric device
08/29/1995US5446306 Thin film voltage-tuned semiconductor bulk acoustic resonator (SBAR)
08/24/1995WO1995022878A2 A background noise reducing microphone
08/22/1995US5444324 Mechanically amplified piezoelectric acoustic transducer
08/22/1995US5443070 Ultrasound prode with banks of interconnected electrostrictive transducer elements
08/22/1995US5442964 Apparatus and method for measuring force with static electric field produced by piezoid elements
08/21/1995WO1995023434A1 A piezoelectric audio transducer
08/16/1995EP0667647A1 Piezoelectric/electrostrictive film element having convex diaphragm portions and method of producing the same
08/16/1995EP0667646A1 Piezoelectric/electrostrictive film element and method of producing the same
08/16/1995EP0667265A1 Composite wall, in particular a windscreen for a car, comprising an ultrasonic detector for detecting foreign bodies on one of its faces
08/16/1995EP0666983A1 High sensitivity sensor.
08/16/1995EP0615471B1 Sonic or ultrasonic transducer
08/08/1995USRE35011 Ultrasound array having trapezoidal oscillator elements and a method and apparatus for the manufacture thereof
08/08/1995US5440188 Piezoelectric crystal element
08/08/1995US5438998 Broadband phased array transducer design with frequency controlled two dimension capability and methods for manufacture thereof
08/03/1995WO1995020827A1 Packaged strain actuator
08/03/1995WO1995004265A3 Dielectrically isolated resonant microsensors
08/03/1995DE19500093A1 Microphone with natural tone and speech reproduction
08/01/1995US5438554 Tunable acoustic resonator for clinical ultrasonic transducers
07/1995
07/25/1995US5435313 Ultrasonic probe
07/19/1995EP0663244A2 Two-dimensional acoustic array and method for the manufacture thereof
07/19/1995EP0550684B1 Acoustic transmitter
07/18/1995US5434827 Matching layer for front acoustic impedance matching of clinical ultrasonic tranducers
07/15/1995CA2139151A1 Two-dimensional acoustic array and method for the manufacture thereof
07/13/1995WO1995019049A1 Ultrasonic transducer with selectable beamwidth and method
07/13/1995CA2180559A1 Ultrasonic transducer with selectable beamwidth and method
07/11/1995US5432396 For converting acoustic wave energy into electric energy
07/04/1995US5430803 Bifunctional earphone set
07/04/1995US5428999 Method and apparatus for acoustic examination using time reversal
06/1995
06/27/1995US5427106 Ultrasound transducer device with a one-dimensional or two-dimensional array of transducer elements
06/27/1995US5426980 Booted ultrasonic transducer
06/21/1995EP0659032A1 Electronic component
06/21/1995CN1103979A Piezoelectric buzzer
06/15/1995WO1995016211A1 Electro-acoustic transducer having a mechanical impedance transformer
06/13/1995US5423319 Integrated impedance matching layer to acoustic boundary problems for clinical ultrasonic transducers
06/13/1995US5423220 Ultrasonic transducer array and manufacturing method thereof
05/1995
05/31/1995EP0655790A1 Piezoelectric device and process for production thereof
05/31/1995EP0655156A1 Ultrasonic transducer.
05/24/1995EP0654245A1 Ultrasonic transesophageal probe for the imaging and diagnosis of multiple scan planes
05/23/1995US5418759 Ultrasound transducer arrangement having an acoustic matching layer
05/23/1995US5417115 Strain responsive measuring device
05/20/1995CA2135692A1 Ultrasonic transesophageal probe for the imaging and diagnosis of multiple scan planes
05/16/1995US5416751 Electroacoustic transducer
05/09/1995US5412854 Method of making a high frequency focused transducer
04/1995
04/25/1995US5410210 Piezoelectric device and process for production thereof
04/25/1995US5410208 Ultrasound transducers with reduced sidelobes and method for manufacture thereof
04/25/1995US5410205 Ultrasonic transducer having two or more resonance frequencies
04/19/1995EP0551328A4 Piezoelectric component-mounting foil and foil-making method
04/11/1995US5406531 Low frequency flex-beam underwater acoustic transducer
04/11/1995US5406161 Piezoelectric composite receiver
04/11/1995CA1335213C Matching member
04/05/1995EP0646271A1 Holder for ultrasonic power converters.
04/04/1995US5402793 Ultrasonic transesophageal probe for the imaging and diagnosis of multiple scan planes
04/04/1995US5402792 Ultrasonic medical apparatus
04/04/1995US5402791 Piezoelectric single crystal, ultrasonic probe, and array-type ultrasonic probe
03/1995
03/30/1995DE4428500A1 Ultrasonic transducer array with a reduced number of transducer elements
03/28/1995US5401237 Blood processing for treating blood disease
03/21/1995US5400414 For a television display
03/16/1995WO1995007529A1 Ultrasonic transducer with adapter
03/15/1995EP0642843A1 Proximity sensor utilizing polymer piezoelectric film
03/15/1995CN1027949C Acoustic transmitter
03/14/1995CA2091892C Acoustic transmitter
03/09/1995WO1995006937A1 Pressure sealed transducer for motor vehicles
03/08/1995EP0642004A2 Sound emission transducer
03/08/1995EP0641606A2 Broadband phased array transducer design with frequency controlled two dimension capability and methods for manufacture thereof
03/07/1995US5396143 Elevation aperture control of an ultrasonic transducer
02/1995
02/23/1995WO1995005136A1 Active foam for noise and vibration control
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