| Patents for H04R 17 - Piezo-electric transducers; Electrostrictive transducers (7,213) |
|---|
| 10/07/1999 | DE19912772A1 Ultrasound sensor for measuring distances |
| 09/29/1999 | EP0945738A2 Underwater sensor device |
| 09/23/1999 | WO1999048083A1 Inertial/audio unit and construction |
| 09/22/1999 | CN1045231C Ceramic diaphragm structure and making method thereof |
| 09/21/1999 | US5956292 Monolithic micromachined piezoelectric acoustic transducer and transducer array and method of making same |
| 09/21/1999 | US5955824 Reduced size electro-acoustic transducer with improved terminal |
| 09/21/1999 | US5955823 High power ultrasonic transducer |
| 09/21/1999 | US5955821 Piezoelectric electro-acoustic transducer |
| 09/14/1999 | US5950291 Method of manufacturing a conformable composite acoustic transducer panel |
| 09/09/1999 | DE19813297C1 Underwater sensor device for ship echo sounder or speed measuring device |
| 09/08/1999 | EP0940059A2 Miniature silicon condenser microphone |
| 09/07/1999 | US5949741 Dual-section push-pull underwater projector |
| 08/25/1999 | CN2335332Y Transversal stretching multi-layer monolithic type piezoelectric micromotion device |
| 08/18/1999 | EP0936842A1 Piezo speaker for improved passenger cabin audio systems |
| 08/18/1999 | EP0935741A2 Surface micro-mechanic ultrasonic transducer |
| 08/18/1999 | EP0872158A4 Piezoelectric transducers |
| 08/18/1999 | EP0872157A4 Piezo speaker for improved passenger cabin audio systems |
| 08/05/1999 | WO1999013681A3 Aerogels, piezoelectric devices, and uses therefor |
| 08/04/1999 | EP0932523A1 Vehicle loudspeakers |
| 07/29/1999 | WO1999038027A1 Transmitter for ultrasonic wave emitter |
| 07/27/1999 | US5930376 Multiple channel speaker system for a portable computer |
| 07/27/1999 | US5928169 Apparatus for treating a subject with focused ultrasound waves |
| 07/22/1999 | WO1999037123A1 Digital piezoelectric transducers and methods |
| 07/22/1999 | WO1999037121A1 Active acoustic devices comprising panel members |
| 07/22/1999 | DE19841681A1 Electrode for a dielectric thin film component especially an ultrasonic wave oscillator |
| 07/22/1999 | CA2318292A1 Active acoustic devices comprising panel members |
| 07/21/1999 | EP0930607A2 Ultrasonic sensor |
| 07/21/1999 | EP0929825A1 Two-dimensional array transducer and beamformer |
| 07/20/1999 | US5926439 Flextensional dual-section push-pull underwater projector |
| 07/15/1999 | WO1999035883A1 Thin loudspeaker |
| 07/13/1999 | CA2119954C Ultrasound transducers with reduced sidelobes and method for manufacture thereof |
| 07/08/1999 | WO1999034453A1 Piezoelectric transducer |
| 07/07/1999 | EP0926989A1 Flexible directive ultrasonically marked catheter |
| 07/07/1999 | CN1222048A Speaker |
| 07/06/1999 | US5920523 Two-dimensional acoustic array and method for the manufacture thereof |
| 07/01/1999 | WO1999033108A1 Wireless inter-chip communication system and method |
| 06/30/1999 | EP0926924A2 Speaker |
| 06/30/1999 | EP0926491A1 Ultrasonic measuring apparatus and system and the use thereof |
| 06/23/1999 | CN1043742C Ultrasonic transducer array with apodized elevation focus |
| 06/22/1999 | US5913825 Ultrasonic probe and ultrasonic survey instrument |
| 06/17/1999 | WO1999030313A1 Ultrasonic transducer with a cup-shaped support |
| 06/17/1999 | DE19816456C1 Ultrasound sensor used in automobile |
| 06/15/1999 | CA2157652C Method of operating an ultrasonic piezoelectric transducer and circuit arrangement for performing the method |
| 06/09/1999 | EP0874978B1 Pressure wave sensor |
| 06/08/1999 | US5910855 For the modulation of a light beam |
| 06/08/1999 | US5910115 Method and apparatus for coherence filtering of ultrasound images |
| 06/03/1999 | WO1999027509A1 Eas marker and method of manufacturing same |
| 06/02/1999 | EP0919987A2 Ultrasonic probe assembly with comb-shaped array |
| 06/02/1999 | EP0919188A2 Ultrasonic probe connector enclosure |
| 06/02/1999 | EP0919108A1 Piezoelectric film transducer for use in an implantable hearing system |
| 06/02/1999 | CN2322348Y Electret capacitor type microphone |
| 05/27/1999 | WO1999026261A1 Ferroelectric relaxor polymers |
| 05/26/1999 | CA2250534A1 Ultrasonic comb probe array assembly |
| 05/25/1999 | US5907768 Methods for fabricating microelectronic structures including semiconductor islands |
| 05/25/1999 | US5907625 Piezoelectric element and piezoelectric acoustic device |
| 05/19/1999 | EP0916500A2 Heat treatment method of actuators for an ink jet printer head and method for manufacturing an ink jet printer head |
| 05/14/1999 | WO1999023804A1 Method for transmitting acoustic signals from a memory or chip card, and card for implementing said method |
| 05/14/1999 | CA2308038A1 Method for transmitting acoustic signals from a memory or chip card, and card for implementing said method |
| 05/06/1999 | EP0912146A1 Biocompatible, implantable hearing aid microactuator |
| 05/05/1999 | CN1216208A Improved biocompatible trausducers |
| 05/04/1999 | US5901231 Piezo speaker for improved passenger cabin audio systems |
| 05/04/1999 | US5900274 Dip coating piezoelectric material made of oxides of lead, zirocnium and titanium on a flat surface of the block to form different crystal structure than the block by dip coating, then dip coatings same oxide layers of variable ratios |
| 05/04/1999 | US5899847 Implantable middle-ear hearing assist system using piezoelectric transducer film |
| 04/28/1999 | EP0910317A1 Surgical instrument for mechanical removal of bone cement, and process for production of shock waves |
| 04/28/1999 | CN1215300A Piezo-electric electro-acoustic transducer |
| 04/28/1999 | CN1214901A Ultrasonic image coherent filtering method and device |
| 04/27/1999 | US5896636 Method for providing a piezoelectric substrate and surface acoustic wave device with reduced bulk acoustic wave scattering |
| 04/22/1999 | WO1999001234A3 Ultrasonic transducer |
| 04/21/1999 | EP0847678B1 Panel-form microphones |
| 04/20/1999 | US5896460 Speaker |
| 04/20/1999 | US5895855 Ultrasonic probe transmitting/receiving an ultrasonic wave of a plurality of frequencies and ultrasonic wave inspection apparatus using the same |
| 04/20/1999 | US5894647 Method for fabricating piezoelectric resonators and product |
| 04/20/1999 | US5894646 Method for the manufacture of a two dimensional acoustic array |
| 04/15/1999 | WO1999017929A1 Polymeric electrostrictive systems |
| 04/14/1999 | EP0908241A2 Composite ultrasonic transducer |
| 04/14/1999 | EP0847677B1 Inertial vibration transducers |
| 03/31/1999 | EP0607443B1 Ultrasonic wave probe |
| 03/30/1999 | US5889873 Piezoelectric acoustic transducer |
| 03/30/1999 | US5889871 Surface-laminated piezoelectric-film sound transducer |
| 03/30/1999 | US5889352 Piezo-electric/electrostrictive film type element |
| 03/30/1999 | US5889194 Apparatus for controlling the sensitivity of transducer elements of an array |
| 03/25/1999 | DE19842191A1 Medical ultrasound device for imaging structures |
| 03/23/1999 | US5886454 Ultrasonic probe and manufacturing method thereof |
| 03/23/1999 | US5884627 Ultrasonic probe, ultrasonic probe device. process for producing piezoelectric element for use in ultrasonic probe and ultrasonic probe and ultrasonic diagnostic equipment and system using ultrasonic probe |
| 03/23/1999 | CA2107874C Piezoelectric sensor |
| 03/18/1999 | WO1999013681A2 Aerogels, piezoelectric devices, and uses therefor |
| 03/16/1999 | US5882309 Multi-row ultrasonic transducer array with uniform elevator beamwidth |
| 03/10/1999 | EP0847660B1 Greetings card or the like with loudspeaker |
| 03/04/1999 | WO1999010874A1 Acoustic transducer |
| 03/03/1999 | EP0847666B1 Panel-form loudspeakers |
| 03/03/1999 | CN1209545A Synthetic energy-converter having cladding block capable of connecting |
| 02/25/1999 | DE19750179A1 Sonic transducer e.g. for air |
| 02/23/1999 | US5874126 Making aggregates and articles made therefrom |
| 02/18/1999 | WO1999008479A1 Sound radiating devices/systems |
| 02/18/1999 | WO1999007437A1 Piezoelectric film transducer |
| 02/18/1999 | CA2295724A1 Sound radiating devices/systems |
| 02/17/1999 | EP0847567B1 A vending machine |
| 02/16/1999 | US5872493 Bulk acoustic wave (BAW) filter having a top portion that includes a protective acoustic mirror |
| 02/11/1999 | DE19832072A1 Piezo-electric electro-acoustic converter |
| 02/10/1999 | EP0715755B1 Pressure sealed transducer for motor vehicles |