| Patents for H04R 17 - Piezo-electric transducers; Electrostrictive transducers (7,213) |
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| 03/14/2002 | DE10040994A1 Wide frequency range sound generation system for internal noise reduction measure in motor vehicle, has vibratable diaphragm made of several passive tightened layers and active function elements |
| 03/13/2002 | EP1186203A2 Bending wave acoustic device |
| 03/13/2002 | CN1340184A Arrays of quasi-randomly distributed ultrasound transducers |
| 03/12/2002 | US6356642 Multi-speaker system |
| 03/12/2002 | US6356641 Vehicular loudspeaker system |
| 03/07/2002 | WO2002019388A2 Class v flextensional transducer with directional beam patterns |
| 03/07/2002 | WO2001087005A3 Cylindrical transducer apparatus |
| 03/07/2002 | US20020027999 Acoustic device |
| 03/06/2002 | EP1182971A1 Ultrasonic transducer with improved compressive loading |
| 03/06/2002 | CN1338884A 转换器 Converters |
| 03/05/2002 | US6353277 Acoustic transducer |
| 02/28/2002 | WO2002017408A1 Electro-active rotary devices |
| 02/28/2002 | WO2002017296A1 Ultrasonic diagnostic imaging system transducer array with multiline patches |
| 02/28/2002 | WO2001080709A3 Systems and methods for creating longer necrosed volumes using a phased array focused ultrasound system |
| 02/28/2002 | DE10039401A1 Mindestens teilweise implantierbares Hörsystem At least partially implantable hearing |
| 02/26/2002 | US6351542 Loudspeakers with panel-form acoustic radiating elements |
| 02/21/2002 | US20020021056 Ultrasonic wave transmitter/receiver |
| 02/21/2002 | DE10139341A1 Ultrasound sensor for obstacle warning device used as a motor vehicle parking aid, has thickness of vibrating membrane reduced for limiting resonance duration |
| 02/19/2002 | US6349141 Dual bi-laminate polymer audio transducer |
| 02/14/2002 | WO2001033902A3 Parametric loudspeaker with improved phase characteristics |
| 02/14/2002 | US20020019668 At least partially implantable system for rehabilitation of a hearing disorder |
| 02/13/2002 | EP1179969A2 At least partially implantable hearing system |
| 02/13/2002 | EP1179286A2 Transducer driver |
| 02/13/2002 | EP1072034B1 Contact element for an ultrasound sensor |
| 02/12/2002 | US6347149 Driver for a flat acoustic panel |
| 02/12/2002 | US6347147 High noise suppression microphone |
| 02/07/2002 | US20020015507 Loudspeaker |
| 02/06/2002 | EP1177837A2 Ultrasonic diagnostic apparatus |
| 02/05/2002 | US6345102 Vehicle loudspeakers |
| 02/05/2002 | US6344024 Multifrequency ultrasound probe |
| 01/31/2002 | WO2002009471A1 Aerial ultrasonic sensor |
| 01/31/2002 | WO2001020948A3 Mems digital-to-acoustic transducer with error cancellation |
| 01/31/2002 | DE10042185A1 Piezoelectric type electro acoustic converter such as piezoelectric earphone, includes multilayer portion which produces vibrations, when AC signal is applied between main electrodes and internal electrode |
| 01/29/2002 | US6343129 Elastomeric dielectric polymer film sonic actuator |
| 01/29/2002 | US6342749 Vibration exciter |
| 01/29/2002 | US6342747 Wing type ultrasonic transducer |
| 01/24/2002 | DE10031847A1 Ultrasonic transducer e.g. for ultrasonic flowmeter, has vibrating mass between head mass and end mass, fixed through piezoelectric elements that vibrate freely with respect to head and end masses |
| 01/23/2002 | EP1175126A1 Piezoelectric transducer |
| 01/23/2002 | EP1173100A1 Apparatus and method for tuning ultrasonic transducers |
| 01/23/2002 | CN1332595A Piezoelectric electroacoustic transducer |
| 01/17/2002 | US20020006208 Piezoelectric speaker |
| 01/16/2002 | EP1173043A2 Piezoelectric speaker |
| 01/16/2002 | EP1172019A2 Piezoelecric vibration exciter |
| 01/16/2002 | EP1172018A2 Hearing aid compatible piezoelectric speaker |
| 01/16/2002 | EP1171919A1 Multi-piezoelectric layer ultrasonic transducer for medical imaging |
| 01/16/2002 | CN1331901A Parametric loudspeaker with electro-acoustical disphragm transducer |
| 01/16/2002 | CN1331842A Multilayer electronic part, its mfg. method, two-dimensionaly arrayed element packaging structure, and its mfg. method |
| 01/02/2002 | EP1165258A1 Hex packed two dimensional ultrasonic transducer arrays |
| 01/02/2002 | CN1329472A Sound pickup sensor |
| 12/27/2001 | WO2001099205A1 Piezo-electric bending transducer |
| 12/27/2001 | WO2001047041A3 Electro-active devices |
| 12/25/2001 | US6333590 Ultrasonic transducer having laminate structure, ultrasonic probe and production method thereof |
| 12/20/2001 | WO2001047318A3 Loudspeaker using an electro-active device |
| 12/18/2001 | US6332029 Acoustic device |
| 12/13/2001 | WO2001045550A3 Ultrasound transducers for imaging and therapy |
| 12/13/2001 | US20010050514 Composite piezoelectric transducer arrays with improved acoustical and electrical impedance |
| 12/13/2001 | DE10028319A1 Electromechanical transducer has piezoelectric elements in stack with intermediate contact electrodes in form of flat connecting vanes fed out of flexible circuit board |
| 12/06/2001 | WO2001093344A1 Piezoelectric acoustic actuator |
| 12/05/2001 | EP1159854A2 Vibration exciters for driving bending wave panels |
| 12/05/2001 | CN1325193A Supersonic-wave emitter/receiver |
| 12/04/2001 | US6327369 Loudspeakers comprising panel-form acoustic radiating elements |
| 11/29/2001 | US20010046052 Dynamic change detecting method, dynamic change detecting apparatus and ultrasonic diagnostic apparatus |
| 11/29/2001 | US20010045792 Piezoelectric type electric acoustic converter |
| 11/29/2001 | DE10123612A1 Ultrasonic wave transmitter/receiver e.g. for use as distance sensor in vehicle, has piezoelectric vibration element attached to inner underside surface, and ultrasonic transmission/reception surface defined by external underside surface |
| 11/28/2001 | EP1156891A2 Low profile acoustic sensor array and sensors with pleated transmission lines and related methods |
| 11/27/2001 | US6321438 Method of applying a matching layer to a transducer |
| 11/22/2001 | US20010042291 Method of working piezoelectric substance and method of manufacturing composite piezoelectric substance |
| 11/20/2001 | US6320967 Passenger vehicles incorporating loudspeakers comprising panel-form acoustic radiating elements |
| 11/20/2001 | US6320239 Surface micromachined ultrasonic transducer |
| 11/15/2001 | WO2001087005A2 Cylindrical transducer apparatus |
| 11/15/2001 | WO2001086695A2 Multiple piezoelectric transducer array |
| 11/15/2001 | WO2001058601A8 Forward and side looking ultrasonic imaging |
| 11/15/2001 | US20010041225 Using stencil |
| 11/15/2001 | US20010040839 Ultrasound sensor for distance measurement |
| 11/15/2001 | US20010039839 Ultrasonic flowmeter and gas flowmeter using the same |
| 11/15/2001 | US20010039703 Method of manufacturing piezoelectric actuator |
| 11/14/2001 | EP1153386A1 Arrays of quasi-randomly distributed ultrasound transducers |
| 11/14/2001 | EP0763232B1 Piezo-electric ultrasound transducer |
| 11/14/2001 | CN1321887A Dynamic change detecting method and apparatus, and ultrasonic diagnosing apparatus |
| 11/13/2001 | US6315933 Method of application of a transducer backing material |
| 11/07/2001 | EP1152230A2 Dynamic change detecting method, dynamic change detecting apparatus and ultrasonic diagnostic apparatus |
| 11/07/2001 | EP1151211A1 Method and device for vibration control |
| 11/07/2001 | EP1150783A1 Composite ultrasonic transducer array operating in the k31 mode |
| 11/06/2001 | US6311573 Ultrasonic transducer for high transduction in gases and method for non-contact ultrasound transmission into solid materials |
| 11/01/2001 | WO2001082388A1 Electroacoustic converter |
| 11/01/2001 | WO2001080709A2 Systems and methods for creating longer necrosed volumes using a phased array focused ultrasound system |
| 11/01/2001 | WO2001080708A2 Systems and methods for reducing secondary hot spots in a phased array focused ultrasound system |
| 10/31/2001 | DE10119217A1 Piezoelectroacoustic transducer e.g. for hearing aid, has piezoelectric ceramic layers forming laminate with main surface electrodes, internal electrode, and resin layer covering entire front and rear of laminate |
| 10/30/2001 | US6310429 Acoustic wave transducer device |
| 10/25/2001 | WO2000054897A9 Low profile acoustic sensor array and sensors with pleated transmission lines and related methods |
| 10/25/2001 | US20010033669 Resonant element transducer |
| 10/25/2001 | US20010032511 Three-dimensional ultrasonic scan probe |
| 10/24/2001 | CN1318965A Piezoelectric electroacoustic transducer |
| 10/23/2001 | US6307942 Panel-form microphones |
| 10/23/2001 | US6307303 Ultrasound transmitting configuration |
| 10/23/2001 | US6307300 Piezoelectric acoustic component |
| 10/18/2001 | WO2001078060A2 Rhythmic apparatus, rhythmic accompaniment method and electronic transducer |
| 10/18/2001 | US20010031922 Ultrasound transducers for imaging and therapy |
| 10/16/2001 | US6304661 Loudspeakers comprising panel-form acoustic radiating elements |
| 10/16/2001 | US6304154 Circuit arrangement including a self-oscillator circuit |