| Patents for H04R 19 - Electrostatic transducers (5,387) |
|---|
| 03/06/2002 | EP1183906A1 Package for micromachined silicon condenser microphone |
| 02/28/2002 | WO2002017677A2 Electrostatic electroacoustical transducer |
| 02/26/2002 | US6351541 Electrostatic transducer |
| 02/22/2002 | WO2001013678A1 Electroacoustic transducer with diaphragm securing structure and method |
| 02/22/2002 | CA2383483A1 Electroacoustic transducer with diaphragm securing structure and method |
| 02/21/2002 | WO2002015636A2 Miniature broadband transducer |
| 02/21/2002 | WO2001059852A3 Monolithic electroactive polymers |
| 02/21/2002 | WO2000070630A3 High performance mems thin-film teflon® electret microphone |
| 02/21/2002 | US20020021816 Method for manufacturing acoustical transducer with reduced parasitic capacitance |
| 02/06/2002 | EP1178456A2 A passive voice-activated microphone and transceiver system |
| 01/31/2002 | WO2001020948A3 Mems digital-to-acoustic transducer with error cancellation |
| 01/31/2002 | WO2001006579A3 Pre-strained electroactive polymers |
| 01/30/2002 | CN1333993A Electrostatic transducer with nonplanar configurated diaphragm |
| 01/29/2002 | US6343129 Elastomeric dielectric polymer film sonic actuator |
| 01/24/2002 | US20020008445 Energy efficient electroactive polymers and electroactive polymer devices |
| 01/16/2002 | CN1331901A Parametric loudspeaker with electro-acoustical disphragm transducer |
| 01/10/2002 | WO2002003747A2 A/d converter with integrated biasing for a microphone |
| 12/27/2001 | WO2001050814A8 Microphone assembly with jfet flip-chip buffer for hearing aid |
| 12/20/2001 | WO2001097562A2 Capacitive micromachined ultrasonic transducers |
| 12/20/2001 | WO2001097559A2 Capacitive micromachined ultrasonic transducers. |
| 12/19/2001 | CN1327357A Electret capacity microphone and its assembling method |
| 12/11/2001 | US6328697 Capacitive micromachined ultrasonic transducers with improved capacitive response |
| 12/11/2001 | US6328696 Bias charge regulator for capacitive micromachined ultrasonic transducers |
| 12/06/2001 | US20010048750 Electret condenser microphone and method of assembling the same |
| 12/05/2001 | CN1325259A Method for producing capacitor-type acoustical pick-up |
| 11/29/2001 | US20010046306 Electroacoustic transducer |
| 11/28/2001 | EP1158833A2 Method for manufacturing condenser microphone |
| 11/27/2001 | US6323049 Method for manufacturing condenser microphone |
| 11/22/2001 | WO2001089264A1 System consisting of a microphone and an amplifier |
| 11/22/2001 | WO2001067810A9 A double-capacitor microphone |
| 11/22/2001 | WO2001067809A9 A layered microphone structure |
| 11/22/2001 | US20010043705 System consisting of a microphone and an amplifier |
| 11/22/2001 | US20010043029 Acoustic transducer and method of making the same |
| 11/22/2001 | US20010043028 Acoustic transducer and method of making the same |
| 11/21/2001 | CN1075305C Baffled pickup assembly |
| 11/07/2001 | EP1151637A1 Electrostatic transducer with nonplanar configured diaphragm |
| 11/01/2001 | WO2001082649A1 Semiconductor electret capacitor microphone |
| 10/31/2001 | CN1320008A Electro-acoustic transducer |
| 10/30/2001 | US6310429 Acoustic wave transducer device |
| 10/30/2001 | US6308398 Method of manufacturing a wafer fabricated electroacoustic transducer |
| 10/25/2001 | US20010033671 Acoustic transducer with improved acoustic damper |
| 10/25/2001 | US20010033670 Thin film electret microphone |
| 10/18/2001 | WO2001078448A1 Method of manufacturing a membrane sensor |
| 10/18/2001 | WO2001076465A1 Sensor system for monitoring the condition of a person and method for its manufacture |
| 10/18/2001 | WO2001059852A8 Monolithic electroactive polymers |
| 10/17/2001 | EP0748576A4 Variable geometry electromagnetic transducer |
| 10/16/2001 | US6304662 Sonic emitter with foam stator |
| 10/10/2001 | EP1142442A2 Hearing aid with large diaphragm microphone element including a printed circuit board |
| 10/04/2001 | US20010026625 Resonant panel-form loudspeaker |
| 10/04/2001 | US20010026165 Monolithic electroactive polymers |
| 09/20/2001 | WO2001067843A2 Port switch as for a hearing aid device |
| 09/20/2001 | DE10049355A1 Filter for microphone, includes pair of transistors of which one is connected to output of microphone through capacitor and another to constant current source at current and control electrode ends |
| 09/13/2001 | WO2001067811A1 Microphone structure |
| 09/13/2001 | WO2001067810A1 A double-capacitor microphone |
| 09/13/2001 | WO2001067809A1 A layered microphone structure |
| 09/07/2001 | WO2001019134A3 Silicon-based sensor system |
| 09/05/2001 | EP0872153B1 Micromechanical microphone |
| 08/30/2001 | WO2001063970A2 Acoustic transducer with improved acoustic damper |
| 08/30/2001 | WO2001063969A1 An anti-noise pick-up |
| 08/30/2001 | DE10052196A1 Mikrofoneinheit Microphone unit |
| 08/30/2001 | CA2399204A1 An anti-noise pick-up |
| 08/29/2001 | CN1310575A Loudspeaker |
| 08/23/2001 | US20010015106 Micromechanical sensor and method for its production |
| 08/16/2001 | WO2001060117A2 Acoustical transducer with reduced parasitic capacitance and method of manufacturing same |
| 08/16/2001 | WO2001059852A2 Monolithic electroactive polymers |
| 08/16/2001 | WO2001058973A2 Energy efficient electroactive polymers and electroactive polymer devices |
| 08/16/2001 | EP1123634A1 Parametric loudspeaker with electro-acoustical diaphragm transducer |
| 08/15/2001 | CN1308832A A method of manufacturing a transducer having a diaphragm with a predetermined tension |
| 08/09/2001 | WO2001058210A1 Anti-noise pickup |
| 08/08/2001 | EP0939888B1 Micromechanical sensor |
| 08/08/2001 | CN1307791A Resonant panel-form loudspeaker |
| 08/07/2001 | US6271620 Acoustic transducer and method of making the same |
| 08/07/2001 | CA2113048C Fabrication process of sio2 electrets and to the electrets obtained |
| 08/01/2001 | EP1120996A2 Electroacoustic transducer |
| 07/26/2001 | WO2001054450A2 Transducer in particularly for use in acoustic devices |
| 07/26/2001 | CA2395022A1 New transducers limited |
| 07/25/2001 | CN1305331A Condenser microphone |
| 07/19/2001 | WO2001052437A1 Parametric audio system |
| 07/18/2001 | CN2439753Y Universal, non-holding clamp like sound-pick-up means for mobile telephone |
| 07/18/2001 | CN2439752Y Universal, non-holding and button like sound-pick-up means used for mobile telephone |
| 07/12/2001 | WO2001050814A1 Microphone assembly with jfet flip-chip buffer for hearing aid |
| 07/12/2001 | US20010007591 Parametric audio system |
| 07/05/2001 | US20010007050 Hearing apparatus |
| 06/28/2001 | US20010005032 Method for producing a filled recess in a material layer, and an integrated circuit configuration produced by the method |
| 06/20/2001 | EP1109422A2 Condenser microphone |
| 06/20/2001 | CN1067507C Magnetic shielding electrodynamic microphone for head-holding type earphone microphone set |
| 06/19/2001 | US6249586 Slot microphone |
| 06/19/2001 | US6249075 Surface micro-machined acoustic transducers |
| 06/14/2001 | WO2001042742A1 Integrated sound transmitter and receiver, and corresponding method for making same |
| 06/13/2001 | EP1107643A2 Insulating ring for condenser microphone |
| 06/13/2001 | EP1107642A2 Condenser microphone |
| 06/13/2001 | EP1107641A2 Audio transducers |
| 06/13/2001 | EP1105344A1 Micromechanical sensor and corresponding production method |
| 06/13/2001 | CN1299228A Capacitor type microphone |
| 06/13/2001 | CN1299226A Capacitor type microphone insulation ring and its fixation method |
| 06/13/2001 | CN1299152A Electro-acoustic transducer and its mfg. method, and electro-acoustic transducing using same |
| 06/07/2001 | US20010002865 Audio transducers |
| 06/05/2001 | US6243474 Thin film electret microphone |
| 05/31/2001 | WO2001039544A1 Electromechanic film and acoustic element |
| 05/30/2001 | CN1297322A Combined electret pick-up with high noise resistance |