| Patents for H04R 17 - Piezo-electric transducers; Electrostrictive transducers (7,213) |
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| 07/29/1997 | US5652801 Resonance damper for piezoelectric transducer |
| 07/24/1997 | WO1997026513A1 Pressure wave sensor |
| 07/24/1997 | WO1997006649A3 Conformable composite acoustic transducer panel |
| 07/24/1997 | DE19602048A1 Druckwellensensor Pressure wave sensor |
| 07/17/1997 | WO1997024985A1 Modular transducer system |
| 07/16/1997 | EP0783670A1 Electromechanical transducer |
| 07/15/1997 | US5648941 Transducer backing material |
| 07/15/1997 | US5648697 Pressure sealed transducer for automotive vehicles |
| 07/10/1997 | WO1997009842A3 Acoustic device |
| 07/08/1997 | US5646583 The resonator attaching to multilayer variable impedance material including silicon dioxide |
| 07/03/1997 | WO1997023865A1 A high resolution intravascular ultrasound transducer assembly having a flexible substrate |
| 07/03/1997 | CA2211196A1 A high resolution intravascular ultrasound transducer assembly having a flexible substrate |
| 07/02/1997 | EP0782370A2 Speaker for radiating sound waves in all directions relative to a speaker-supporting surface |
| 07/02/1997 | EP0782203A2 Piezoelectric/electrostrictive film-type element and method for producing the same |
| 06/24/1997 | US5642331 Constant radius acoustic sensor mounting system |
| 06/24/1997 | US5640961 Device with aspherical compensation for focusing ultrasound |
| 06/19/1997 | DE19651752A1 Piezoelectric ultrasonic signals transducer with capacitively coupled earthing electrode e.g. for liquid level sensor |
| 06/17/1997 | US5640370 Two-dimensional acoustic array and method for the manufacture thereof |
| 06/17/1997 | US5639508 Method for producing a layered piezoelectric element |
| 06/17/1997 | CA2105491C Acoustic transducer |
| 06/10/1997 | US5638456 Piezo speaker and installation method for laptop personal computer and other multimedia applications |
| 06/10/1997 | US5637800 Ultrasonic transducer array and manufacturing method thereof |
| 06/03/1997 | US5636182 Portable ultrasonic underwater sensor |
| 06/03/1997 | US5636070 Thin film actuated mirror array |
| 06/03/1997 | US5635788 Control circuit for a piezoelectric vibrator |
| 06/03/1997 | US5635685 Electroacoustic transducer with mechanical impedance transformer |
| 06/03/1997 | US5634466 Ultrasonic transesophageal probe with detachable transducer tip |
| 05/28/1997 | DE19642072A1 Combined ultrasonic sensor for detecting defects in steel pipes |
| 05/27/1997 | US5633552 Micromechanical device |
| 05/15/1997 | WO1997017820A1 Piezoelectric transducers |
| 05/15/1997 | WO1997017818A1 Piezo speaker for improved passenger cabin audio systems |
| 05/15/1997 | WO1997017693A1 Phased array ultrasound system and method for cardiac ablation |
| 05/15/1997 | DE19647712A1 Field probe for ultrasonic flaw detection in steel plate or tube |
| 05/14/1997 | EP0772953A2 Piezo speaker and installation method for laptop personal computer and other multimedia applications |
| 05/13/1997 | US5629906 Ultrasonic transducer |
| 05/09/1997 | WO1997016817A1 Sound and vibration control windows |
| 05/07/1997 | DE19540455A1 Piezoelectric electroacoustic device esp. for full-range high fidelity miniature loudspeaker |
| 05/02/1997 | EP0769988A1 Wide-band multifrequency acoustic transducer |
| 05/01/1997 | WO1997016049A1 Method for making a sound transducer integrated into an acoustic signal generating card |
| 05/01/1997 | WO1997009841A3 Greetings or the like card |
| 04/30/1997 | DE19540203A1 Mechanically stable large area piezo-ceramic component |
| 04/29/1997 | US5625248 Piezoelectric buzzer |
| 04/29/1997 | US5625149 Ultrasonic transductor |
| 04/23/1997 | EP0646271B1 Holder for ultrasonic power converters |
| 04/23/1997 | CN1148275A Thin film piezoelectric arrays with enhanced coupling and fabrication methods |
| 04/16/1997 | EP0767949A1 Process and device for generating spherical waves in the ultrasound range |
| 04/09/1997 | EP0767597A2 Spherical piezoelectric speaker |
| 04/08/1997 | US5617866 Modular transducer system |
| 04/08/1997 | CA2097806C Electroacoustic transducer mounting apparatus |
| 04/02/1997 | EP0766325A1 Piezoelectric/electrostrictive film element and method of producing the same |
| 03/27/1997 | WO1997011575A1 Implantable hearing aid |
| 03/27/1997 | DE19625649A1 Focusing ultrasound beam onto target region of object esp. for intravascular ultrasound imaging |
| 03/19/1997 | EP0763233A1 Impedance-matching composite material for an ultrasonic phased array and a method of making |
| 03/19/1997 | EP0763232A1 Piezo-electric ultrasound transducer |
| 03/18/1997 | US5613022 Diffractive display and method utilizing reflective or transmissive light yielding single pixel full color capability |
| 03/13/1997 | WO1997009862A1 Panel-form microphones |
| 03/13/1997 | WO1997009861A1 Inertial vibration transducers |
| 03/13/1997 | WO1997009847A1 Panel-form loudspeakers |
| 03/13/1997 | WO1997009842A2 Acoustic device |
| 03/13/1997 | WO1997009841A2 Greetings or the like card |
| 03/13/1997 | WO1997009698A1 A vending machine |
| 03/13/1997 | CA2230701A1 Panel-form loudspeakers |
| 03/13/1997 | CA2230459A1 A vending machine |
| 03/13/1997 | CA2230449A1 Panel-form microphones |
| 03/13/1997 | CA2229857A1 Inertial vibration transducers |
| 03/06/1997 | WO1997008917A1 Ultrasonic transducer |
| 03/05/1997 | EP0500765B1 Resonance oscillator |
| 03/04/1997 | US5608692 Multi-layer polymer electroacoustic transducer assembly |
| 03/04/1997 | US5607535 Method of manufacturing a laminated piezoelectric actuator |
| 02/26/1997 | EP0759260A1 Resonance damper for piezoelectric transducer |
| 02/20/1997 | WO1997006649A2 Conformable composite acoustic transducer panel |
| 02/19/1997 | EP0758818A1 Surface-skimming bulk wave substrate, device including same and method |
| 02/12/1997 | EP0666983B1 High sensitivity sensor |
| 02/11/1997 | US5602327 Leakage-sound detecting apparatus |
| 02/05/1997 | EP0757505A2 Piezoelectric element and piezoelectric acoustic device |
| 02/04/1997 | US5600197 Piezoelectric/electrostrictive film element and method of producing the same |
| 02/01/1997 | CA2179090A1 Piezoelectric element and piezoelectric acoustic device |
| 02/01/1997 | CA2179088A1 Piezoelectric acoustic device |
| 01/28/1997 | US5598380 Composite wall, notably motor vehicle windshield, including an ultrasonic device for detecting the presence of foreign bodies on one of its faces |
| 01/28/1997 | US5597610 Method for coating electric component with resin |
| 01/23/1997 | WO1997002720A1 Ultrasonic transducers method for fixing ultrasonic transducers and high output power ultrasonic transducers |
| 01/23/1997 | CA2226276A1 Ultrasonic transducers method for fixing ultrasonic transducers and high output power ultrasonic transducers |
| 01/22/1997 | EP0755167A2 Piezoelectric acoustic device |
| 01/14/1997 | US5592730 Method for fabricating a Z-axis conductive backing layer for acoustic transducers using etched leadframes |
| 01/07/1997 | US5590657 Phased array ultrasound system and method for cardiac ablation |
| 01/02/1997 | EP0751696A1 Equalization system of a telephone piezoceramic transducer |
| 12/28/1996 | CA2179848A1 Transducer for otoacoustic emission instruments |
| 12/27/1996 | EP0750443A2 Piezoelectric acoustic device |
| 12/17/1996 | US5585956 Electrostrictive actuated mirror array |
| 12/17/1996 | US5585546 Apparatus and methods for controlling sensitivity of transducers |
| 12/10/1996 | US5583293 Sonic or ultrasonic transducer |
| 12/03/1996 | US5581144 Transducer apparatus for use in a liquid carrying vessel |
| 11/26/1996 | US5577506 Catheter probe having a fixed acoustic reflector for full-circle imaging |
| 11/13/1996 | EP0741914A1 Packaged strain actuator |
| 11/07/1996 | WO1996035313A1 Acoustic vibration generator |
| 11/07/1996 | CA2219234A1 Acoustic vibration generator |
| 10/31/1996 | WO1996034381A1 Apparatus for ultrasound testing using liquid couplant |
| 10/31/1996 | CA2218662A1 Apparatus for ultrasound testing using liquid couplant |
| 10/30/1996 | EP0739656A2 Ultrasonic transducer array and manufacturing method thereof |
| 10/29/1996 | US5569968 Microfabricated acoustic source and receiver |