| Patents for H04R 17 - Piezo-electric transducers; Electrostrictive transducers (7,213) |
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| 09/15/2004 | CN1529885A High-speed one-time writing-in optical recording medium, optical-recording method and apparatus |
| 09/15/2004 | CN1529840A Electronic article comprising loudspeaker & touch pad |
| 09/14/2004 | US6791098 Multi-input, multi-output motion control for lithography system |
| 09/10/2004 | WO2004077880A1 Generating device for generating a useful stream of a medium, in particular for generating sound |
| 09/10/2004 | WO2004077876A1 Headphone |
| 09/09/2004 | US20040174796 Optical recording medium |
| 09/09/2004 | US20040174773 Mosaic arrays using micromachined ultrasound transducers |
| 09/09/2004 | US20040174095 Anisotropic acoustic impedance matching material |
| 09/08/2004 | CN1528104A Electroacoustic conversion of audio signals, especially voice signals |
| 09/08/2004 | CN1527414A Mosaic array of ultrasound transducer by micromachining |
| 09/07/2004 | US6787048 Method for producing thin bulk acoustic resonators (FBARs) with different frequencies on the same substrate by subtracting method and apparatus embodying the method |
| 09/07/2004 | CA2144996C Diffractive display utilizing reflective or transmissive light yielding single pixel full color capability |
| 09/02/2004 | US20040171936 Ultrasonic transmitting/receiving device and method for fabricating the same |
| 09/02/2004 | US20040171404 Arrangement for integrating a radio phone structure |
| 09/02/2004 | US20040171403 Integrated radio telephone structure |
| 09/02/2004 | US20040170282 Sound simulator and sound simulating method |
| 09/02/2004 | US20040169439 Handheld device having ultrasonic transducer for axial transmission of acoustic signals |
| 09/02/2004 | US20040168518 Ultrasonic wave utilizing device |
| 09/01/2004 | EP1452243A2 Ultrasonic transmitting/receiving device and method of fabricating the same |
| 09/01/2004 | CN1165149C Piezoelectric electroacoustic transducer and its manufacturing method |
| 08/31/2004 | US6784600 Ultrasound diagnostic systems that use ultrasonic transducers to provide diagnostic information concerning the interior of the body through ultrasound imaging |
| 08/26/2004 | US20040167405 Ultrasonic probe and method for fabricating the probe |
| 08/26/2004 | US20040163244 Method of manufacturing and mounting electronic devices to limit the effects of parasitics |
| 08/26/2004 | DE10311083B3 Loudspeaker integrated with housing for mobile telephone has piezoelectric actuator at one end of lid on housing exciting bending waves in lid |
| 08/25/2004 | EP1450477A1 Piezoelectric actuator, and timepiece and portable unit with piezoelectric actuator |
| 08/25/2004 | EP1449482A1 Ultrasonic probe and its fabrication method |
| 08/25/2004 | EP1448317A1 Ultrasonic transducer and method of joining an ultrasonic transducer |
| 08/24/2004 | US6781285 Packaged strain actuator |
| 08/24/2004 | US6780157 Method and apparatus for ultrasonic imaging |
| 08/19/2004 | WO2004047482A3 A high intensity directional electroacoustic sound generating system for communications targeting |
| 08/18/2004 | CN1522478A Arrangement for integrating a radio phone structure |
| 08/18/2004 | CN1163105C Piezoelectric electroacoustic transducer |
| 08/17/2004 | US6778470 Mountable syntactic foam sensor housing |
| 08/17/2004 | US6776051 Ultrasonic transducer and ultrasonic flowmeter using same |
| 08/12/2004 | US20040158151 Apparatus and method for an ultrasonic probe device with rapid attachment and detachment means |
| 08/12/2004 | DE10353662A1 Piezoelektrischer Wandler, der für die Brücke eines Saiteninstrumentes geeignet ist A piezoelectric transformer which is suitable for the bridge of a string instrument |
| 08/11/2004 | EP1445037A2 System for repolarizing transducers in an ultrasonic probe |
| 08/11/2004 | EP1444737A1 Piezoelectric devices |
| 08/11/2004 | CN1520626A Arrangement for integrating radio phone structure |
| 08/10/2004 | US6774540 Sound converting apparatus |
| 08/10/2004 | US6773401 Diagnostic medical ultrasound systems and transducers utilizing micro-mechanical components |
| 08/05/2004 | WO2004066669A2 Anisotropic acoustic impedance matching material |
| 08/05/2004 | DE20319824U1 Loudspeaker has at least one membrane of tubular cross-section of circular or elliptical shape attached to drive at longitudinal edges |
| 08/05/2004 | DE10297066T5 Elektroakustischer Wandler Electro-acoustic transducer |
| 08/04/2004 | EP1441654A1 Ultrasonic probe device having an impedance mismatch with rapid attachment and detachment means |
| 08/04/2004 | EP1441653A2 Ultrasonic probe device with rapid attachment and detachment means having a line contact collet |
| 08/04/2004 | CN1517296A Flexible micro-electromechanical system changer and its manufacturing method and radio loud-speaker |
| 08/04/2004 | CN1517295A Manufacturing method of flexible micro-electromechanical system changer |
| 08/03/2004 | US6771006 Cylindrical ultrasound transceivers |
| 07/29/2004 | WO2004064449A1 Piezoelectric speaker, speaker system employing it, and electronic apparatus employing piezoelectric speaker |
| 07/29/2004 | WO2004064116A2 Polymer film composite transducer |
| 07/29/2004 | US20040147132 Flexible MEMS transducer manufacturing method |
| 07/29/2004 | US20040145280 Electromechanical converter comprising at least one piezoelectric element |
| 07/28/2004 | EP1117982A4 System and method for monitoring pressure, flow and constriction parameters of plumbing and blood vessels |
| 07/22/2004 | WO2002096304A9 Method for aiming ultrasound for medical treatment |
| 07/22/2004 | US20040140735 Biometric sensing device with isolated piezo ceramic elements |
| 07/22/2004 | DE10354026A1 Piezoelektrische Membran und diese piezoelektrischer elektroakustischer Wandler unter Verwendung derselben Piezoelectric membrane and these piezoelectric electroacoustic transducer using the same |
| 07/21/2004 | CN2626860Y Airport bird dispelling equipment using remote controlled model airplane as carrier |
| 07/21/2004 | CN1158793C Sound communication system between portable unit and communication terminal |
| 07/15/2004 | US20040138563 Method and apparatus combining diagnostic ultrasound with therapeutic ultrasound to enhance thrombolysis |
| 07/15/2004 | DE10323493B3 Underwater antenna for acoustic monitoring of sea region e.g. for ship, using electroacoustic transducers embedded in acoustically transparent material |
| 07/14/2004 | EP1437587A1 Sound simulator and sound simulating method |
| 07/14/2004 | EP1436097A2 System for attaching an acoustic element to an integrated circuit |
| 07/14/2004 | EP1135063B1 Sound pickup sensor |
| 07/14/2004 | CN2626169Y Series connection nonpolarity piezoelectric ceramic high frequency vocal sheet |
| 07/14/2004 | CN1512822A Piezoelectric diaphragm and piezoelectric electroacoustic converter using piezoelectric diaphragm |
| 07/14/2004 | CN1512481A Improved transducer |
| 07/08/2004 | WO2004057913A1 Ultrasonic transmitter/receiver, process for producing the same, and ultrasonic flowmeter |
| 07/08/2004 | WO2004057912A2 Acoustic actuators |
| 07/08/2004 | WO2004057911A1 Method and device for converting energy between membranes |
| 07/08/2004 | WO2004014284B1 Device and method for ultrasound wound debridement |
| 07/06/2004 | US6759950 Ultrasonic obstacle detector and method of assembling the same |
| 07/06/2004 | US6759791 Multidimensional array and fabrication thereof |
| 07/06/2004 | US6759769 Dielectric film intended for transforming electric energy into mechanical energy or vice versa |
| 07/06/2004 | US6758927 Firing laminate of green sheets including piezoelectric ceramic containing lead and conductive paste containing silver, in profile having heating, isothermal and cooling periods in atmosphere with specified oxygen concentration |
| 07/06/2004 | US6758094 Ultrasonic transducer wafer having variable acoustic impedance |
| 07/06/2004 | US6757948 Method for manufacturing an ultrasonic array transducer |
| 07/01/2004 | US20040127791 Method for mapping temperature rise using pulse-echo ultrasound |
| 07/01/2004 | US20040124748 Piezoelectric diaphragm and piezoelectric electroacoustic transducer using the same |
| 06/30/2004 | EP1433357A1 Device for listening to voice and/or musical signals by means of cranial bone transmission |
| 06/30/2004 | EP1432355A2 Faceted ultrasound medical transducer assembly |
| 06/30/2004 | EP1287720B1 Electromechanical transducer |
| 06/24/2004 | DE10341900A1 Ultraschallsensor Ultrasonic sensor |
| 06/23/2004 | EP1430838A1 Ultrasonic probe |
| 06/23/2004 | EP1429870A1 Frequency and amplitude apodization of transducers |
| 06/23/2004 | CN1507687A Piezoelectric actuator, and timpiece and portable unit with piezoelectric actuator |
| 06/22/2004 | US6754136 Hydrophone with automatic inhibition in case an adjustable immersion threshold is exceeded |
| 06/17/2004 | US20040114778 Miniature directional microphone |
| 06/17/2004 | US20040114777 Electroacoustic conversion of audio signals, especially voice signals |
| 06/17/2004 | US20040114467 High density pixel array |
| 06/17/2004 | US20040113524 Backing material for micromachined ultrasonic transducer devices |
| 06/17/2004 | US20040112413 Piezoelectric transducer for generating ultrasound |
| 06/16/2004 | EP1427343A2 Ultrasound-based occlusive procedure for medical treatment |
| 06/16/2004 | CN1505844A Electromechanical transducer with at least one piezoelectricelement |
| 06/15/2004 | US6751333 Inertial vibration transducers |
| 06/15/2004 | US6751324 Speaker device |
| 06/10/2004 | WO2004010730A3 Ultrasonic transducer for electronic devices |
| 06/09/2004 | EP1426941A1 Optical recording medium |
| 06/08/2004 | US6748359 Method for transmitting acoustic signals from a memory or chip card, and card for implementing said method |
| 06/08/2004 | US6747916 Communication system between a portable unit and a communication terminal |