| Patents for H04R 17 - Piezo-electric transducers; Electrostrictive transducers (7,213) |
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| 06/30/1998 | US5772575 Implantable hearing aid |
| 06/23/1998 | US5770801 Ultrasound transmissive pad |
| 06/17/1998 | EP0847678A1 Panel-form microphones |
| 06/17/1998 | EP0847677A1 Inertial vibration transducers |
| 06/17/1998 | EP0847666A1 Panel-form loudspeakers |
| 06/17/1998 | EP0847661A2 Acoustic device |
| 06/17/1998 | EP0847660A2 Greetings or the like card |
| 06/17/1998 | EP0847567A1 A vending machine |
| 06/16/1998 | CA2097018C Ultrasonic transducer assembly |
| 06/09/1998 | US5764596 Two-dimensional acoustic array and method for the manufacture thereof |
| 06/09/1998 | US5762583 Vibrator for an implantable hearing system |
| 06/09/1998 | CA2122442C Ultrasonic converter |
| 06/03/1998 | EP0612430B1 Ultrasonic transducer |
| 06/02/1998 | US5761324 Piezoelectric acoustic device |
| 06/02/1998 | US5761156 Piezoelectric ultrasonic transducer |
| 05/28/1998 | WO1998023128A2 Miniature silicon condenser microphone |
| 05/27/1998 | EP0843952A1 Ultrasonic transducer |
| 05/26/1998 | US5757104 Method of operating an ultransonic piezoelectric transducer and circuit arrangement for performing the method |
| 05/26/1998 | US5757090 Folded dielectric film element and method for maufacturing the same |
| 05/20/1998 | EP0843367A2 Ceramic diaphragm structure having convex diaphragm portion and method of producing the same |
| 05/20/1998 | DE19648726A1 Piezoelectric drive element |
| 05/12/1998 | US5751827 Piezoelectric speaker |
| 05/12/1998 | US5750002 Method for fabricating piezoelectric polymer acoustic sensors |
| 05/07/1998 | WO1998019140A2 Surface micro-mechanic ultrasonic transducer |
| 05/07/1998 | DE19643893A1 Ultraschallwandler in Oberflächen-Mikromechanik Ultrasonic transducers in surface micromachining |
| 05/06/1998 | EP0840284A2 A transducer |
| 05/06/1998 | EP0681513B1 Manufacturing method of an mechanically focusing ultrasonic transducer array |
| 05/06/1998 | CN1038290C Electrical Interconnection apparatus |
| 05/05/1998 | US5748566 Ultrasonic transducer |
| 04/30/1998 | WO1998018291A1 Acoustic piezoelectric vibrator and loudspeaker using the same |
| 04/29/1998 | EP0838272A2 Ultrasonic apparatus |
| 04/29/1998 | EP0741914A4 Packaged strain actuator |
| 04/28/1998 | US5744898 Ultrasound transducer array with transmitter/receiver integrated circuitry |
| 04/28/1998 | CA2124952C Sonic or ultrasonic transducer |
| 04/23/1998 | WO1998016409A1 Vehicle loudspeakers |
| 04/23/1998 | CA2266361A1 Vehicle loudspeakers |
| 04/22/1998 | EP0837342A1 Ultrasonic sensor and obstruction detector having accurate obstruction detection capabilities |
| 04/21/1998 | US5740596 Method of making a miniature, high efficiency dual frequency ultrasonic transducer |
| 04/16/1998 | WO1998015846A1 Two-dimensional array transducer and beamformer |
| 04/15/1998 | EP0835459A1 System and device for a self orienting device |
| 04/14/1998 | US5740261 Miniature silicon condenser microphone |
| 04/08/1998 | EP0834989A2 A device incorporating a tunable thin film bulk acoustic resonator for performing amplitude and phase modulation |
| 04/08/1998 | CN1178443A Miniaturized electro-acoustic transducer with performance decrease minimization |
| 04/07/1998 | US5736808 Piezoelectric speaker |
| 04/07/1998 | US5736807 Piezoelectric transformer suitable for generating a high voltage |
| 04/02/1998 | WO1998013942A1 Vehicular loudspeaker system |
| 03/25/1998 | CN1177166A Piezoelectric electro-acoustic transducer |
| 03/18/1998 | CN1037807C Electroacoustic transducer |
| 03/17/1998 | US5728089 Microfabricated structure to be used in surgery |
| 03/10/1998 | US5727076 Audio transducer having piezoelectric device |
| 03/05/1998 | WO1998008440A1 Flexible directive ultrasonically marked catheter |
| 02/25/1998 | EP0825799A2 Reduced size electro-acoustic transducer with improved terminal |
| 02/25/1998 | EP0824844A1 Acoustic vibration generator |
| 02/17/1998 | US5719945 Active foam for noise and vibration control |
| 02/12/1998 | WO1998006238A1 Piezoelectric film transducer for use in an implantable hearing system |
| 02/11/1998 | EP0823111A1 Apparatus for ultrasound testing using liquid couplant |
| 02/11/1998 | CN1037396C Piezoelectric transducer |
| 02/04/1998 | EP0822537A2 Piezoelectric electro-acoustic transducer |
| 02/03/1998 | US5714917 Device incorporating a tunable thin film bulk acoustic resonator for performing amplitude and phase modulation |
| 01/29/1998 | WO1998003134A1 Biocompatible, implantable hearing aid microactuator |
| 01/13/1998 | US5708521 Actuated mirror array for use in optical projection system |
| 01/08/1998 | DE19624443A1 Piezoelectric electro-acoustic converter e.g. for generating shock-waves |
| 01/07/1998 | CN1169648A Wearing-on-head type earphone with brain tonifying function |
| 01/06/1998 | US5706252 Wideband multifrequency acoustic transducer |
| 12/29/1997 | EP0813802A1 Passive acousto-optic modulator |
| 12/24/1997 | WO1997048353A1 Surgical instrument for mechanical removal of bone cement, and process for production of shock waves |
| 12/17/1997 | EP0713378A4 Active foam for noise and vibration control |
| 12/16/1997 | US5698928 Thin film piezoelectric arrays with enhanced coupling and fabrication methods |
| 12/10/1997 | EP0812124A2 Piezoelectric speaker |
| 12/10/1997 | EP0811226A1 A high resolution intravascular ultrasound transducer assembly having a flexible substrate |
| 12/09/1997 | US5696618 For use in an optical projection system |
| 12/03/1997 | EP0810811A2 Speaker |
| 11/25/1997 | US5691960 Conformal composite acoustic transducer panel and method of fabrication thereof |
| 11/18/1997 | US5687462 Method of forming an electro-active device |
| 11/13/1997 | WO1997042790A1 Ultrasonic transducer |
| 11/11/1997 | US5685311 Image display system |
| 11/06/1997 | WO1997041451A1 System and device for a self orienting device |
| 11/06/1997 | CA2225420A1 System and device for a self orienting device |
| 11/05/1997 | EP0598715B1 Ultrasonic transducer |
| 11/04/1997 | US5684884 Piezoelectric loudspeaker and a method for manufacturing the same |
| 11/04/1997 | US5684243 Methods for controlling sensitivity of electrostrictive transducers |
| 10/28/1997 | US5682260 Actuated mirror array with active matrix substrate having array of MOSFETS |
| 10/22/1997 | EP0802521A2 Transducer for sending and/or receiving of acoustic signals |
| 10/22/1997 | CN1162937A Ultrasonic transducer array with apodized elevation focus |
| 10/08/1997 | EP0799470A1 System for processing an object with focused ultrasonic waves |
| 10/08/1997 | EP0799097A1 Acoustic transducer shaped as a prestressed ring |
| 10/07/1997 | US5675296 Capacitive-component reducing circuit in electrostatic-type transducer means |
| 10/02/1997 | DE19701334A1 Transducer for medical imaging which transmits a first harmonic and predominantly receives second harmonics |
| 09/23/1997 | US5670932 Piezoelectric sounder |
| 09/17/1997 | EP0796034A2 Piezoelectric acoustic transducer |
| 09/16/1997 | US5668303 Sensor having a membrane as part of an electromechanical resonance circuit forming receiver and transmitter converter with interdigital structures spaced apart from one another |
| 09/02/1997 | US5662782 Method and apparatus for adjusting a resonance frequency of piezoelectric elements |
| 08/28/1997 | WO1997031364A1 Ultrasound transmissive pad |
| 08/28/1997 | CA2246322A1 Ultrasound transmissive pad |
| 08/21/1997 | WO1997030565A1 Improved biocompatible transducers |
| 08/19/1997 | US5659220 Ultrasonic transducer |
| 08/12/1997 | US5656882 Packaged strain actuator |
| 08/07/1997 | WO1997028427A1 Method and apparatus for measuring dispensed doses of flowable material |
| 08/05/1997 | US5654101 Acoustic composite material for an ultrasonic phased array |
| 07/30/1997 | EP0785826A1 Ultrasonic transducer array with apodized elevation focus |