| Patents for H04R 17 - Piezo-electric transducers; Electrostrictive transducers (7,213) |
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| 02/21/1995 | US5392259 Micro-grooves for the design of wideband clinical ultrasonic transducers |
| 02/21/1995 | US5391140 Therapy apparatus for locating and treating a zone in the body of a life form with acoustic waves |
| 02/14/1995 | US5390155 Acoustic particle acceleration sensor and array of such sensors |
| 02/09/1995 | WO1995004265A2 Dielectrically isolated resonant microsensors |
| 02/09/1995 | DE4427798A1 Piezoelectric single crystal, ultrasonic probe and array probe |
| 02/08/1995 | EP0637875A1 Acoustical isolator and method therefor |
| 02/08/1995 | EP0637470A2 Backing layer for acoustic transducer array |
| 02/08/1995 | EP0637469A2 Multilayer transducer element |
| 02/02/1995 | WO1995003632A1 Method of fabricating a piezocomposite material |
| 02/02/1995 | DE4325028A1 Ultrasonic transducer device with a one- or two-dimensional array of transducer elements |
| 01/31/1995 | US5386479 Piezoelectric sound sources |
| 01/26/1995 | WO1995002838A1 Diffractive display utilizing reflective or transmissive light yielding single pixel full color capability |
| 01/25/1995 | EP0635938A1 Piezoelectric crystal element |
| 01/25/1995 | EP0635719A2 Booted ultrasonic transducer |
| 01/18/1995 | EP0634227A2 Broadband ultrasonic transducers and related method of manufacture |
| 01/11/1995 | CN1097265A Vibrator, resonator and resonance component utilizing width |
| 01/10/1995 | US5381386 Membrane hydrophone |
| 01/10/1995 | US5381385 Electrical interconnect for multilayer transducer elements of a two-dimensional transducer array |
| 01/05/1995 | WO1995001079A1 Folded dielectric film element and method for manufacturing the same |
| 01/05/1995 | WO1995000948A1 High frequency focused transcucer and method of making same |
| 12/28/1994 | EP0547060B1 Ultrasonic transducer for measuring the travel times of ultrasonic pulses in a gas |
| 12/27/1994 | US5376860 Piezoelectric sensor |
| 12/27/1994 | US5376853 Electroacoustic transducer |
| 12/22/1994 | WO1994030030A1 Microfabricated acoustic source and receiver |
| 12/21/1994 | EP0629994A2 Micro-grooves for the design of wideband clinical ultrasonic transducers |
| 12/21/1994 | EP0629993A2 Matching layer for front acoustic impedance matching of clinical ultrasonic transducers |
| 12/21/1994 | EP0629992A2 Micro-grooves for apodization and focussing of wideband clinical ultrasonic transducers |
| 12/20/1994 | US5375099 Transducer with acoustic matching member and method of making the transducer |
| 12/14/1994 | EP0629007A1 Piezoelectric device |
| 12/06/1994 | US5371717 Microgrooves for apodization and focussing of wideband clinical ultrasonic transducers |
| 12/06/1994 | US5371428 Piezoelectric transducer |
| 12/06/1994 | US5369862 Method of producing a piezoelectric device |
| 11/23/1994 | EP0625379A2 Signal conditioning and interconnection for an acoustic transducer |
| 11/22/1994 | US5367500 Transducer structure |
| 11/08/1994 | US5363344 Acoustic sensor having a shell-mounted transducer |
| 11/01/1994 | US5360959 Direct current resistance welding machine and method of controlling the same |
| 10/27/1994 | DE4412964A1 Vibrator Vibrator |
| 10/27/1994 | DE4313229A1 Ultrasonic transducer arrangement with an attenuating body |
| 10/19/1994 | EP0620696A1 Piezo-electric acoustic transducer |
| 10/19/1994 | EP0620049A2 Multilayer acoustic transducer |
| 10/19/1994 | EP0620048A2 Ultrasound transducers with reduced sidelobes and method for manufacture thereof |
| 10/11/1994 | US5353621 Piezoelectric component mounting foil and foil-making method |
| 10/04/1994 | US5351546 Monochromatic ultrasonic transducer |
| 09/21/1994 | EP0615647A1 Acoustic non-destructive testing |
| 09/21/1994 | EP0615625A1 Therapy device for destroying a target by acoustic signals featuring time reversal |
| 09/21/1994 | EP0615471A1 Sonic or ultrasonic transducer. |
| 09/20/1994 | US5349262 Phased array ultrasound imaging system with dynamic elevation focusing |
| 09/14/1994 | EP0615295A1 Piezoelectric/electrostrictive element having electrode film(s) with specified surface roughness |
| 09/14/1994 | EP0614705A2 Wave-receiving piezoelectric device |
| 09/14/1994 | EP0614704A2 Sound pulse generating apparatus for medical applications |
| 09/14/1994 | CN1092238A Electroacoustic transducer |
| 09/06/1994 | US5345428 Flextensional transducers |
| 09/06/1994 | US5345427 Ultrasonic transducer |
| 09/06/1994 | US5345139 Electrostrictive ultrasonic probe having expanded operating temperature range |
| 08/31/1994 | EP0613323A1 Piezoceramic capsule for telephone instruments |
| 08/31/1994 | EP0612430A1 Ultrasonic transducer |
| 08/30/1994 | US5343109 Ultrasonic transducer for measuring the travel time of ultrasonic pulses in a gas |
| 08/24/1994 | EP0498793B1 Process for manufacturing an acoustic sensor with an essentially non-detachable protective layer, and acoustic sensor so obtained |
| 08/16/1994 | US5339364 Device for conversion between electrical oscillations and acoustic waves |
| 08/16/1994 | US5339290 Membrane hydrophone having inner and outer membranes |
| 08/16/1994 | US5339285 Monolithic low noise preamplifier for piezoelectric sensors |
| 08/16/1994 | US5337461 Loading of flextensional transducer shells |
| 08/04/1994 | WO1994016826A1 Ultrasonic transducer array and manufacturing method thereof |
| 08/02/1994 | US5334903 Composite piezoelectrics utilizing a negative Poisson ratio polymer |
| 07/27/1994 | EP0607443A1 Ultrasonic wave probe |
| 07/27/1994 | EP0440655B1 Ultrasonic transducer comprising at least one row of ultrasonic elements |
| 07/21/1994 | DE4325398C1 Piezo-electric sound transducer |
| 07/19/1994 | US5329682 Method for the production of ultrasound transformers |
| 07/13/1994 | EP0605666A1 Mechanical-vibration-cancelling piezo ceramic microphone |
| 07/12/1994 | US5329499 Acoustic transmitter |
| 07/12/1994 | US5329498 Signal conditioning and interconnection for an acoustic transducer |
| 07/12/1994 | US5329496 Two-dimensional array ultrasonic transducers |
| 07/05/1994 | CA2042623C Acoustic transducer |
| 06/22/1994 | EP0602261A1 Method for making piezoelectric composites |
| 06/19/1994 | CA2085760A1 Method for making piezoelectric composites |
| 06/14/1994 | US5321761 Piezoelectric sound generator and method of its manufacture |
| 06/07/1994 | US5317792 Method of manufacturing piezoelectric resonator |
| 06/01/1994 | EP0598715A1 Ultrasonic transducer |
| 05/31/1994 | US5317305 Personal alarm device with vibrating accelerometer motion detector and planar piezoelectric hi-level sound generator |
| 05/31/1994 | US5317229 Pressure pulse source operable according to the traveling wave principle |
| 05/25/1994 | EP0598556A1 Electroacoustic transducer |
| 05/24/1994 | US5315565 Resonance oscillator |
| 05/18/1994 | EP0596974A1 Ultrasonic transducer arrangement and catheter. |
| 05/18/1994 | CN1086745A Unit for fastening of altrosonic power transferer |
| 05/17/1994 | CA2068505C Ultrasonic transducer |
| 05/11/1994 | EP0596190A1 Polymeric piezoelectric material |
| 05/04/1994 | EP0595514A2 Piezoelectric transducer |
| 05/04/1994 | CN1086368A Piezoelectric transducer |
| 05/03/1994 | US5309519 Electroacoustic novelties |
| 05/03/1994 | US5309411 For generating sonic waves |
| 04/28/1994 | WO1994009605A1 Two-dimensional array ultrasonic transducers |
| 04/28/1994 | DE4302537C1 Ultrasound imaging and therapy device - generates imaging waves and focussed treatment waves having two differing frequencies for location and treatment of e.g tumours |
| 04/27/1994 | EP0594399A1 Monochromatic ultrasonic transducer |
| 04/27/1994 | EP0594331A1 Piezoelectric sensor |
| 04/26/1994 | CA1328823C Low pressure acoustic reflector for conformal arrays |
| 04/14/1994 | WO1994008253A1 Therapy device for destroying a target by acoustic signals featuring time reversal |
| 04/14/1994 | WO1994007615A1 Sonic or ultrasonic transducer |
| 04/06/1994 | EP0591061A1 Method and device for acoustic examination with time reversal |
| 04/06/1994 | EP0590799A2 Acoustic transducer |
| 04/06/1994 | EP0590193A1 Ultrasonic transducer arrangement with acoustic impedance matching layer |