| Patents for H04R 17 - Piezo-electric transducers; Electrostrictive transducers (7,213) |
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| 12/03/2008 | CN100439882C Piezoelectric acoustic sensor |
| 12/03/2008 | CN100438992C Ultrasonic membrane transducer |
| 12/02/2008 | US7460435 Acoustic transducers for tubulars |
| 11/27/2008 | WO2008143573A1 Vibrator for bone conducting hearing devices |
| 11/27/2008 | WO2008143463A2 A sound converting apparatus |
| 11/27/2008 | US20080294053 Ultrasonic probe and manufacturing process thereof |
| 11/27/2008 | US20080292119 Asymmetrical Moving Systems for a Piezoelectric Speaker and Asymmetrical Speaker |
| 11/27/2008 | US20080289952 Surface deformation electroactive polymer transducers |
| 11/26/2008 | CN101313628A Electroacoustic transducer |
| 11/25/2008 | US7457199 Shear mode folded shell projector |
| 11/25/2008 | US7454820 Method of manufacturing a plurality of laminated structures |
| 11/20/2008 | WO2008139869A1 Ultrasonic transmitter/receiver, ultrasonic probe, and ultrasonic diagnostic apparatus |
| 11/20/2008 | US20080284283 Piezo Stack With Novel Passivation |
| 11/20/2008 | US20080282521 Method for manufacturing quartz crystal unit and electronic apparatus having quartz crystal unit |
| 11/20/2008 | US20080282520 Method for manufacturing quartz crystal unit and electronic apparatus having quartz crystal unit |
| 11/19/2008 | EP1993322A1 Ultrasonic sensor, and its manufacturing method |
| 11/19/2008 | EP1993321A1 Acoustic matching material, ultrasonic vibrator, and ultrasonic flowmeter |
| 11/19/2008 | CN101310561A Asymmetrical moving systems for a piezoelectric speaker and asymmetrical speaker |
| 11/18/2008 | US7453772 Flexural cylinder projector |
| 11/13/2008 | WO2008136198A1 Ultrasonic transducer and ultrasonic imaging apparatus |
| 11/13/2008 | DE102007036153B3 Ultrasonic sensor receiving and storing device for e.g. dust collecting robot system, has tubular body part and receiver body connected with each other in rotation-safe manner and narrowed into slotted opening |
| 11/12/2008 | EP1173100B1 Method for tuning ultrasonic transducers |
| 11/12/2008 | CN201150130Y Minisize piezoelectric loudspeaker |
| 11/12/2008 | CN201150129Y Multilayer piezoelectric loudspeaker |
| 11/06/2008 | US20080273735 Voice tube antenna for wireless headset |
| 11/06/2008 | US20080273720 Optimized piezo design for a mechanical-to-acoustical transducer |
| 11/05/2008 | EP1988741A1 Piezoelectric sounding body |
| 11/04/2008 | US7445318 Method of manufacturing liquid droplet ejection head, liquid droplet ejection head, and liquid droplet ejection apparatus |
| 10/30/2008 | WO2008130462A1 Electroacoustic transducer |
| 10/30/2008 | US20080269607 Ultrasonic Treatment Apparatus |
| 10/30/2008 | US20080265712 Energy Harvesting Device Manufactured by Print Forming Processes |
| 10/29/2008 | CN101297591A Ultrasonic transducer |
| 10/28/2008 | US7443765 Reconfigurable linear sensor arrays for reduced channel count |
| 10/28/2008 | US7443081 Multi-frequency transmission/reception apparatus |
| 10/28/2008 | US7442337 Method of laminating articles |
| 10/28/2008 | US7441321 Method of manufacturing ultrasound transducer device having acoustic backing |
| 10/23/2008 | US20080260188 Acoustic Diaphragm and Speaker Having the Same |
| 10/23/2008 | US20080258843 Surface acoustic wave passband control |
| 10/22/2008 | EP1983584A2 Piezoelectric macro-fiber composite actuator and manufacturing method |
| 10/22/2008 | EP1450477B1 Piezoelectric actuator, and timepiece and portable unit with piezoelectric actuator |
| 10/16/2008 | US20080252172 Acoustic stack for ultrasonic transucers and method for manufacturing same |
| 10/15/2008 | EP1981308A1 Ultrasonic probe |
| 10/15/2008 | EP1980209A1 Ultrasound probe |
| 10/15/2008 | EP1646309A4 Method for making a spiral array ultrasound transducer |
| 10/15/2008 | EP0993344B2 Ultrasonic transducer |
| 10/15/2008 | CN201134929Y Low-noise contact-vibrating piezoelectric microphone |
| 10/09/2008 | US20080247585 Electrical Module Comprising a Mems Microphone |
| 10/08/2008 | EP1978778A1 Electronic device and sound reproducing method |
| 10/02/2008 | US20080240472 Bending vibration type sound transmitter |
| 10/02/2008 | DE102007014246A1 Ultrasonic sensor for acquisition of objects, and for double sheet control, has emitter issuing ultrasonic waves and acceptor receiving ultrasonic waves, where emitter and acceptor has ultrasonic transducer |
| 10/01/2008 | CN100422765C Integrated acoustic transducer assembly |
| 10/01/2008 | CN100422691C Supersonic flowmeter of supersonic sensor |
| 09/25/2008 | WO2008114582A1 Ultrasonic probe and method for manufacturing the same and ultrasonic diagnostic device |
| 09/25/2008 | US20080232630 Condenser microphone package |
| 09/25/2008 | US20080232197 Ultrasonic sensor and obstacle detection device |
| 09/25/2008 | US20080229830 Ultrasonic Sensor |
| 09/25/2008 | DE102007014579A1 Microphone, has micro phone housing and micro phone capsule and electrical circuits are provided on printed circuit board for signal processing of signals recorded by micro phone capsule |
| 09/24/2008 | EP1972015A1 Monolithic bending element |
| 09/23/2008 | CA2338374C Method of manufacturing a capacitive ultrasound transducer |
| 09/18/2008 | WO2008111728A1 Film speaker |
| 09/18/2008 | US20080222864 Method for forming a multi-frequency surface acoustic wave device |
| 09/17/2008 | CN201118976Y Vibration energy converter |
| 09/17/2008 | CN101268716A Ultrasonic sensor |
| 09/17/2008 | CN100418481C Piezoelectric transducer including a plurality of piezoelectric members |
| 09/16/2008 | US7425198 Method and apparatus for automatic location of blood flow with Doppler ultrasound |
| 09/16/2008 | US7424771 Method of producing a piezocomposite |
| 09/11/2008 | US20080219101 Acoustic Projector Having Minimized Mechanical Stresses |
| 09/11/2008 | US20080218031 Electroacoustic Transducer |
| 09/11/2008 | DE102007044490A9 Ultraschallsensor zur Verwendung in einem Kraftfahrzeug Ultrasonic sensor for use in a motor vehicle |
| 09/11/2008 | DE102007010500A1 Ultraschallwandler mit direkt eingebettetem Piezo Ultrasonic transducer directly with embedded piezoelectric |
| 09/10/2008 | EP1273002B1 Rhythmic apparatus, rhythmic accompaniment method and electronic transducer |
| 09/10/2008 | CN201114760Y A solid conductive microphone |
| 09/10/2008 | CN201114759Y A voltage electrical microphone and sound-electrical converter |
| 09/10/2008 | CN101262959A Piezoelectric actuator, acoustic element, and electronic device |
| 09/10/2008 | CN101262712A A voice directional spreading sound system |
| 09/09/2008 | US7421767 Method for manufacturing a piezoelectric vibration device |
| 09/09/2008 | CA2309695C Eas marker and method of manufacturing same |
| 09/04/2008 | US20080212807 Micromachined Acoustic Transducers |
| 09/04/2008 | US20080212408 Ultrasonic Rod Transducer |
| 09/03/2008 | EP1646326A4 Ablation device with spiral array ultrasound transducer |
| 09/03/2008 | CN101258772A Ultrasonic sensor |
| 09/03/2008 | CN101258771A Ultrasonic sensor |
| 09/03/2008 | CN100416913C Arrangement for integrating radio phone structure |
| 09/03/2008 | CN100415318C Systems for creating longer necrosed volumes using phased array focused ultrasound system |
| 08/28/2008 | DE102007001921B3 Medizinischer Schallsensor sowie Diagnoseverfahren zur Diagnose von Herz- und/ oder Lungenerkrankungen Medical acoustic sensor as well as diagnostic methods for the diagnosis of heart and / or lung disease |
| 08/27/2008 | EP1962552A1 Ultrasonic transducer |
| 08/27/2008 | CN101253804A Speaker, image element protective screen, case of terminal, and terminal |
| 08/26/2008 | US7418102 Broad-band echo sounder |
| 08/20/2008 | EP1188348B1 Microfabricated transducer and method for making the same |
| 08/20/2008 | CN101247674A Piezoelectric ceramic electro-acoustic conversion device |
| 08/20/2008 | CN100411968C Flexible micro-electromechanical system changer and its manufacturing method and radio loud-speaker |
| 08/14/2008 | US20080191582 Generating Device for Generating a Useful Stream of a Medium, in Particular for Generating Sound |
| 08/13/2008 | EP1337998B1 Ultrasonic transducer and ultrasonic flowmeter |
| 08/13/2008 | EP1216602B1 Mems digital-to-acoustic transducer with error cancellation |
| 08/13/2008 | CN101241183A Mounting structure for sensor device |
| 08/12/2008 | US7411335 Sonic or ultrasonic transducer |
| 08/07/2008 | WO2008094448A1 High-resolution mapping of bio-electric fields |
| 08/07/2008 | DE102008007042A1 Montageaufbau für Sensorvorrichtung Mounting structure for sensor device |
| 08/06/2008 | EP1952667A1 Asymmetrical moving system for a piezoelectric speaker and asymmetrical speaker |
| 08/06/2008 | EP0880870B1 Improved biocompatible transducers |