| Patents for H04R 19 - Electrostatic transducers (5,387) |
|---|
| 09/26/2002 | WO2002017677A3 Electrostatic electroacoustical transducer |
| 09/26/2002 | US20020135708 Display substrate and display device |
| 09/25/2002 | EP1244332A2 Silicon capacitive microphone |
| 09/25/2002 | CN1371234A 电声转换器 Electroacoustic transducer |
| 09/19/2002 | WO2002028142A3 Electrostatic acoustic device |
| 09/12/2002 | US20020127760 Method and apparatus for micro electro-mechanical systems and their manufacture |
| 09/12/2002 | DE10209695A1 Signal pick-up system for motor vehicle hands-free system has microphone unit inductively coupled to electrical signal wires in seatbelt |
| 09/10/2002 | US6449370 Digital electro-acoustic transducer |
| 09/05/2002 | US20020122561 Elastomeric dielectric polymer film sonic actuator |
| 09/03/2002 | US6443901 Capacitive micromachined ultrasonic transducers |
| 08/29/2002 | WO2000027166A9 Transducer concepts for hearing aids and other devices |
| 08/29/2002 | US20020118850 Micromachine directional microphone and associated method |
| 08/28/2002 | CN1366785A Semiconductor electric capacitor microphone |
| 08/27/2002 | US6441451 Pressure transducer and manufacturing method thereof |
| 08/22/2002 | WO2001006579A8 Pre-strained electroactive polymers |
| 08/22/2002 | US20020114478 Speaker apparatus |
| 08/22/2002 | US20020114476 Electroacoustic capsule |
| 08/21/2002 | EP1233648A2 Electroacoustic transducer |
| 08/21/2002 | EP1233647A2 Electroacoustic capsule |
| 08/21/2002 | EP1232669A1 Electromechanic film and acoustic element |
| 08/15/2002 | WO2002063924A1 System for assembling a ultra-thin type condenser microphone |
| 08/15/2002 | WO2002063922A2 Improved single-ended planar-magnetic speaker |
| 08/15/2002 | US20020110254 Electroacoustic transducer |
| 08/14/2002 | EP1231818A1 Anti-noise pickup |
| 08/14/2002 | EP1229837A1 Stethoscope transducer |
| 08/13/2002 | US6434245 Compound electrolytic loudspeaker assembly |
| 08/08/2002 | WO2002062101A1 Microphone unit with internal a/d converter |
| 08/08/2002 | WO2002062100A1 Microphone system excellent in directivity |
| 08/08/2002 | US20020106828 Silicon capacitive microphone |
| 08/08/2002 | US20020106091 Microphone unit with internal A/D converter |
| 08/01/2002 | WO2002060215A2 Wireless battery-less microphone |
| 08/01/2002 | US20020102004 Miniature silicon condenser microphone and method for producing same |
| 07/31/2002 | EP1226741A1 Acoustic element |
| 07/25/2002 | WO2001063970A3 Acoustic transducer with improved acoustic damper |
| 07/23/2002 | US6422991 Implantable microphone having improved sensitivity and frequency response |
| 07/18/2002 | US20020093038 Pressure transducer and manufacturing method thereof |
| 07/16/2002 | US6420203 Method of producing semiconductor electret condenser microphone |
| 07/11/2002 | US20020090102 Microphone assembly for hearing aid with JFET flip-chip buffer |
| 07/11/2002 | DE10064359A1 Microphone for use as a directional microphone has integrated pre-amplifier switching circuit fitted directly on surface of rear side face facing back plate electrode |
| 07/10/2002 | EP1221180A2 Electroactive polymers |
| 07/09/2002 | US6417560 Semiconductor device |
| 07/04/2002 | WO2002052894A1 A micromachined capacitive transducer |
| 07/04/2002 | WO2002052893A1 A highly stable micromachined capacitive transducer |
| 07/03/2002 | EP1219136A1 A pressure transducer |
| 06/27/2002 | WO2002051205A1 Condenser microphone assembly |
| 06/27/2002 | US20020080984 Electrostatic loudspeaker with a distributed filter |
| 06/26/2002 | EP1216602A2 Mems digital-to-acoustic transducer with error cancellation |
| 06/20/2002 | WO2002049393A1 Ultra-thin type condenser microphone assembly and method for assembling the same |
| 06/20/2002 | US20020076076 Condenser microphone assembly |
| 06/20/2002 | US20020076069 Sonic emitter with foam stator |
| 06/20/2002 | US20020076041 Method for fixing the substrate of an acoustic transducer |
| 06/19/2002 | EP1214865A1 Electroacoustic transducer with diaphragm securing structure and method |
| 06/19/2002 | EP1214864A2 Silicon-based sensor system |
| 06/19/2002 | CN1354615A Electret condenser microphone |
| 06/13/2002 | US20020071579 Electret condenser microphone |
| 06/13/2002 | US20020071578 A/D converter with integrated biasing for a microphone |
| 06/12/2002 | EP1212800A1 Improved electroactive polymers |
| 06/06/2002 | WO2002045463A2 Miniature silicon condenser microphone and method for producing same |
| 06/06/2002 | US20020067663 Miniature broadband acoustic transducer |
| 05/29/2002 | EP1207970A2 Electrostatic ultrasonic transducer and method of making the same |
| 05/29/2002 | CN1351463A Capacitor microphone |
| 05/22/2002 | EP0903058B1 Electroacoustic transducer |
| 05/21/2002 | US6393129 Paper structures for speaker transducers |
| 05/21/2002 | US6389902 Micromechanical sensor and method for its production |
| 05/16/2002 | WO2001059852B1 Monolithic electroactive polymers |
| 05/16/2002 | US20020057812 Electret condenser microphone and method of producing same |
| 05/15/2002 | EP1206160A1 Digital loudspeaker |
| 05/15/2002 | CN1349368A Electrostatic mutual inductor |
| 05/10/2002 | WO2002037893A1 An electret condenser microphone |
| 05/08/2002 | EP0883972B1 Acoustic element and method for sound processing |
| 05/07/2002 | US6383832 Applying polyimide onto a semiconductor, forming silicon nitride resist, and etching; miniaturization of electret condenser microphones and other devices while maintaining performance |
| 05/02/2002 | WO2001060117A3 Acoustical transducer with reduced parasitic capacitance and method of manufacturing same |
| 05/02/2002 | US20020051553 Microphone |
| 05/02/2002 | US20020051547 Capacitor microphone |
| 05/02/2002 | US20020050769 Electroactive polymer electrodes |
| 05/02/2002 | DE10152602A1 Electrostatic loudspeaker equipment has bias voltage applied between oscillator electrode and fixed electrode |
| 04/30/2002 | US6381336 Microphones for an implatable hearing aid |
| 04/25/2002 | WO2002034008A1 A capacitive transducer |
| 04/25/2002 | WO2001067843A3 Port switch as for a hearing aid device |
| 04/25/2002 | WO2001054450A3 Transducer in particularly for use in acoustic devices |
| 04/25/2002 | US20020048383 Electrostatic transducer |
| 04/25/2002 | US20020047173 Semiconductor device, semiconductor electret condenser microphone, and method of producing semiconductor electret condenser microphone |
| 04/24/2002 | CN1346231A Electret capacitance microphone and making method |
| 04/23/2002 | US6376971 Electroactive polymer electrodes |
| 04/18/2002 | WO2001097562A3 Capacitive micromachined ultrasonic transducers |
| 04/18/2002 | WO2001097559A3 Capacitive micromachined ultrasonic transducers. |
| 04/17/2002 | EP1198158A2 Electroacoustic transducer |
| 04/10/2002 | CN1344480A Compound electrolytic loudspeaker assembly |
| 04/04/2002 | WO2002028142A2 Electrostatic acoustic device |
| 04/03/2002 | EP1194004A1 Electrostatic acoustic device |
| 04/03/2002 | EP1192836A1 Microphone with range switching |
| 04/02/2002 | US6366678 Microphone assembly for hearing aid with JFET flip-chip buffer |
| 03/28/2002 | DE10045201A1 Akustische Wiedergabeeinrichtung Acoustic reproducing device |
| 03/27/2002 | EP1191810A1 Semiconductor electret capacitor microphone |
| 03/27/2002 | CN2483928Y Vibrating diaphragm of electrostatic loudspeaker |
| 03/21/2002 | WO2002023944A2 Acoustic playback device |
| 03/21/2002 | US20020034312 Capacitor microphone |
| 03/19/2002 | US6357299 Micromechanical sensor and method for producing the same |
| 03/07/2002 | WO2002019764A1 Electrostatic audio loudspeakers |
| 03/07/2002 | WO2001058973A3 Energy efficient electroactive polymers and electroactive polymer devices |