| Patents for H04R 9 - Transducers of moving-coil, moving-strip, or moving-wire type (11,486) |
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| 04/22/2004 | WO2004034737A1 Magnet assembly for loudspeakers |
| 04/22/2004 | WO2004034735A1 Equalizable active electroacoustic device for panels, and method of converting the panels and assembling the devices |
| 04/22/2004 | US20040076842 Ceramic isulation coated electric wire self-fusing ceramic insulation coated electric wire coating composition and coil and voices coil for speaker |
| 04/22/2004 | US20040076309 Audio radiator with radiator flexure minimization and voice coil elastic anti-wobble members |
| 04/22/2004 | US20040076308 Compact high performance speaker |
| 04/22/2004 | US20040076307 Twin magnetic loop used in the electro-acoustic device |
| 04/22/2004 | US20040075351 Multi-functional vibrating actuator |
| 04/22/2004 | CA2490872A1 Equalizable active electroacoustic device for panels, and method of converting the panels and assembling the devices |
| 04/21/2004 | EP1411748A1 Speaker and method of manufacturing the speaker |
| 04/21/2004 | EP1410682A1 Low profile speaker and system |
| 04/21/2004 | CN1491524A Double-dome speaker |
| 04/21/2004 | CN1491066A Heat conduction of audio frequency device |
| 04/20/2004 | US6724909 Speaker apparatus |
| 04/20/2004 | US6724908 Method for producing electric-mechanical acoustic converter |
| 04/20/2004 | US6723913 Fan cooling of active speakers |
| 04/15/2004 | WO2004032566A1 Bone vibrating speaker using the diaphragm and mobile phone thereby |
| 04/15/2004 | US20040071309 Compound sound generator |
| 04/15/2004 | US20040071307 Dual magnetic loop type receiver |
| 04/15/2004 | US20040071303 Compound sound generator |
| 04/15/2004 | US20040070547 Structure of dual magnetic loop type receiver |
| 04/15/2004 | US20040070294 Electroacoustic converter |
| 04/15/2004 | DE19757097B4 Schallwiedergabeanordnung Sound reproduction device |
| 04/15/2004 | DE19631293B4 Akustischer Wandler An acoustic transducer |
| 04/15/2004 | DE10346593A1 Schallerzeuger Sound generator |
| 04/15/2004 | DE10346592A1 Schallerzeuger Sound generator |
| 04/15/2004 | DE10196892T5 Akustische Lautsprecher Acoustic speakers |
| 04/14/2004 | CN1489880A Electroacoustic transducer |
| 04/14/2004 | CN1489879A Electrocoustic converter |
| 04/13/2004 | US6721435 Acoustic loudspeaker with energy absorbing bearing and voice coil, and selective sound dampening and dispersion |
| 04/13/2004 | US6720691 Vibrating device for transmitting information |
| 04/08/2004 | WO2004030407A2 Drive mechanism |
| 04/08/2004 | WO2004019652A3 Loudspeaker |
| 04/08/2004 | WO2004019446A3 Audio radiator with radiator flexure minization and voice coil elastic anti-wobble members |
| 04/08/2004 | US20040066950 Electroacoustic transducer with small dimensions |
| 04/08/2004 | US20040066263 Energy converter with two coils and two magnetic gaps |
| 04/07/2004 | CN2610593Y Four audio frequency coaxial loudspeaker |
| 04/07/2004 | CN2610592Y Three audio frequency coaxial loudspeaker |
| 04/07/2004 | CN1487859A Multi-functional vibrating actuator |
| 04/07/2004 | CN1487771A Acousto-electric inventer |
| 04/06/2004 | US6718040 Transformer, loudspeaker device, loudspeaker network, and loudspeaker system |
| 04/06/2004 | US6717304 Magnetic assembly structure used for compact electric apparatus and compact electric apparatus adopting the magnetic assembly structure |
| 04/01/2004 | WO2004028200A2 Magnetic circuit for electromechanical transducers |
| 04/01/2004 | US20040062415 Voice coil bobbin |
| 04/01/2004 | US20040062414 Speaker |
| 04/01/2004 | US20040062407 Loudspeaker with a front-mounted sealing element and method of manufacturing the same |
| 04/01/2004 | US20040062146 Speaker |
| 03/31/2004 | EP1404149A2 Voice coil bobbin |
| 03/31/2004 | CN2609309Y All-band coaxial loudspeaker |
| 03/31/2004 | CN1486580A 扬声器驱动器 Speaker Driver |
| 03/31/2004 | CN1144499C Electro-mechanical-acoustic transducer and prtable teminal unit |
| 03/31/2004 | CN1144498C Resonant panel-form loudspeaker |
| 03/31/2004 | CN1144444C Portable electronic device with speaker assembly |
| 03/30/2004 | US6714656 Loudspeaker system with dust protection |
| 03/30/2004 | US6714655 Speaker |
| 03/25/2004 | WO2004017677A3 Subwoofer |
| 03/24/2004 | EP1401239A2 Heat Transfer in Audio Device |
| 03/23/2004 | US6711274 Compound speaker for a portable communication device |
| 03/23/2004 | US6711269 Multifunction acoustic device |
| 03/23/2004 | US6708797 Display enclosure having thin speaker |
| 03/18/2004 | WO2004023843A1 Vibration actuator device of portable terminal |
| 03/18/2004 | WO2004023842A1 Yoke of speaker |
| 03/18/2004 | WO2004023840A2 Suspension for the voice coil of a loudspeaker drive unit |
| 03/18/2004 | US20040052397 Audio device heat transferring |
| 03/17/2004 | EP1397938A2 Loudspeaker |
| 03/17/2004 | EP0957658B1 Thin electromagnetic transducer |
| 03/16/2004 | US6707922 Deformable loudspeaker |
| 03/11/2004 | WO2004021739A1 Dynamic micro speaker with dual suspension |
| 03/11/2004 | WO2003067923A3 Transducer motor/generator assembly |
| 03/11/2004 | US20040047488 Planar ribbon electro-acoustic transducer with high SPL capability and adjustable dipole/monopole low frequency radiation |
| 03/11/2004 | DE10238325A1 Lautsprecher Speaker |
| 03/10/2004 | CN2606509Y Loundspeaker with light-emitting diode decoration |
| 03/10/2004 | CN1481196A Electroacoustic transducer and its mfg. method |
| 03/10/2004 | CN1141856C Telephone with receiver arousing bone-conduction and air-conduction hearing |
| 03/10/2004 | CN1141798C Multifunctional sounding body and portable terminating machine |
| 03/09/2004 | US6704430 Electroacoustic transducer |
| 03/04/2004 | WO2004019652A2 Loudspeaker |
| 03/04/2004 | WO2004019446A2 Audio radiator with radiator flexure minization and voice coil elastic anti-wobble members |
| 03/04/2004 | US20040042633 Electroacoustic transducer and method for manufacturing the same |
| 03/04/2004 | US20040042631 Magnetic circuit for speaker with short-circuiting ring |
| 03/03/2004 | EP1395082A2 Magnetic circuit for speaker with short-circuiting ring |
| 03/03/2004 | CN2605713Y Detecting device for loudspeaker voice coil positioning |
| 03/02/2004 | US6700988 Speaker spider with integral lead wire arrangement and manufacturing method thereof |
| 03/02/2004 | US6700986 Microphone characteristic adjustment device |
| 02/26/2004 | WO2004017677A2 Subwoofer |
| 02/26/2004 | WO2004017674A1 Loudspeaker with inverted cone |
| 02/26/2004 | WO2004017672A1 Sound transducer comprising a small rear volume chamber |
| 02/26/2004 | WO2004017532A1 Subminiature bone vibrating speaker using the diaphragm and mobile phone thereby |
| 02/26/2004 | US20040037446 Speaker and method of manufacturing the speaker |
| 02/26/2004 | US20040037441 Speaker, speaker module, and electronic equipment using the speaker module |
| 02/25/2004 | EP1297720B1 Electroacoustic transducer with replaceable diaphragm |
| 02/25/2004 | CN1478369A Loudspeaker |
| 02/25/2004 | CN1477898A Full directional backload horn |
| 02/19/2004 | US20040031891 Mounting bracket system |
| 02/18/2004 | CN1476735A Loudspeaker having acoustic panel and electrical driver |
| 02/18/2004 | CN1476734A Speaker, speaker module, and electronic equipment using speaker module |
| 02/18/2004 | CN1476177A Receiver |
| 02/17/2004 | US6694039 Having cone of magnesium-lithium alloy with specified specific gravity, tensile strength, specific strength and internal loss, manufactured by stamping under normal temperature |
| 02/17/2004 | US6694037 Spider-less loudspeaker with active restoring apparatus |
| 02/17/2004 | US6691832 Speaker |
| 02/12/2004 | WO2004014104A2 Electroacoustic transducer with built in transducer circuit |