| Patents for H04R 9 - Transducers of moving-coil, moving-strip, or moving-wire type (11,486) |
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| 08/12/2004 | WO2004068899A1 Speaker, and module and electronic device using such speaker |
| 08/12/2004 | WO2004068898A1 Loudspeaker |
| 08/12/2004 | US20040156527 Push-pull electromagnetic transducer with increased Xmax |
| 08/12/2004 | US20040156526 Closed-ended linear voice coil actuator with improved force characteristic |
| 08/12/2004 | US20040156525 Transducer motor with low thermal modulation |
| 08/12/2004 | US20040156524 Component member for electric, component member for electro-acoustic transducers, and method of manufacturing the same |
| 08/12/2004 | US20040155741 Flat linear voice coil actuator with planar coils and a spring-type characteristic |
| 08/11/2004 | EP1445980A1 Speaker |
| 08/11/2004 | EP1273204B1 Acoustic transducer for broad-band loudspeakers or headphones |
| 08/11/2004 | EP0985327A4 Flush mounted uni-directional microphone |
| 08/11/2004 | CN2632973Y Fixer of loudspeaker |
| 08/11/2004 | CN1520231A Speaker surtable to different output power |
| 08/11/2004 | CN1162042C Loudspeaker |
| 08/11/2004 | CN1162041C Photoelectric transudcer indluding enclosuring element for enclosuring rear volume of transducer |
| 08/10/2004 | US6774510 Electromagnetic motor with flux stabilization ring, saturation tips, and radiator |
| 08/10/2004 | US6772855 Damper for speaker and method of producing the same |
| 08/05/2004 | WO2004066671A1 Plane series magnetic circuit and the electricity-machine-sound transducer using the magnetic circuit |
| 08/05/2004 | WO2004065158A2 Condensed speaker system |
| 08/05/2004 | US20040151339 Speaker |
| 08/05/2004 | US20040151338 Thin type full-range speaker |
| 08/05/2004 | DE10303030A1 Treiber Driver |
| 08/04/2004 | CN2631171Y Blutooth hand-free receiver module structure |
| 08/04/2004 | CN1518396A Ultra-high audio-frequoncy loudspeaker |
| 08/04/2004 | CN1518395A Electroacoustical transducing by low frequency augmenting devices |
| 08/04/2004 | CN1161000C Mechanical acoustic dividing network and transducer thereof |
| 08/04/2004 | CN1160924C Handfree earphone device for plug-in use of multiple communication machines |
| 08/04/2004 | CN1160870C Vibrating loudspeaker |
| 08/03/2004 | US6771792 Track-shaped loudspeaker |
| 08/03/2004 | US6771791 Air pump speaker |
| 07/29/2004 | WO2004064448A1 Loudspeaker |
| 07/29/2004 | WO2004010728A3 Pole plate for a magnetic drive in a loudspeaker |
| 07/29/2004 | US20040146175 Resonance frequency correction method and vibration speaker |
| 07/29/2004 | US20040146174 Speaker |
| 07/29/2004 | US20040146173 Racetrack-shaped magnetic loop and coil for use in the miniature electro-dynamic transducer |
| 07/29/2004 | US20040145859 Acoustic device |
| 07/29/2004 | US20040145258 Electro-mechanical transducer |
| 07/28/2004 | EP1441560A1 Speaker having magnetic member installed on diaphragm |
| 07/28/2004 | EP1440602A1 Improved moving coil transducer |
| 07/28/2004 | CN2629379Y Loudspeaker with coexisting magnet structure |
| 07/28/2004 | CN1159950C Monolithic integrated capacitor type silicon base micro microphone and its producing process |
| 07/28/2004 | CN1159949C Planar acoustic transducer |
| 07/27/2004 | US6768806 Shorting rings in dual-coil dual-gap loudspeaker drivers |
| 07/22/2004 | WO2004061547A2 Automatic digital music library builder |
| 07/22/2004 | WO2004028200A3 Magnetic circuit for electromechanical transducers |
| 07/22/2004 | WO2004014104A3 Electroacoustic transducer with built in transducer circuit |
| 07/22/2004 | US20040141629 Combination voice coil and diaphragm device for receiver and its fabrication method |
| 07/22/2004 | CA2749116A1 Automatic digital music library builder |
| 07/21/2004 | EP1439731A1 An electroacoustic transducer |
| 07/21/2004 | EP1438872A2 Electroacoustic transducer having a moving coil and having movable holding elements for the connecting leads of the moving coil |
| 07/21/2004 | EP1234477B1 Speaker and motor vehicle assembly |
| 07/21/2004 | CN2627780Y 智能型电子体温耳机 Intelligent electronic temperature headphones |
| 07/21/2004 | CN2627779Y Telephone receiver |
| 07/21/2004 | CN2627778Y Loudspeaker structure modification |
| 07/21/2004 | CN2627777Y Centering supporter fixing supplementary structure |
| 07/21/2004 | CN1158901C Miniature loudspeaker and its manufacturing method |
| 07/21/2004 | CN1158896C Apparatus including electroacoustic transducer having terminal contacts which extend in the direction of the transducer axis and including printed circuit board having mating contacts |
| 07/20/2004 | US6766034 Multifunction acoustic device |
| 07/15/2004 | US20040136561 Speaker having magnetic member installed on diaphragm |
| 07/15/2004 | US20040136560 Condensed speaker system |
| 07/15/2004 | US20040136559 Voice coil and a speaker that uses the voice coil |
| 07/15/2004 | US20040136558 Electroacoustic transducer and electronic apparatus |
| 07/15/2004 | US20040136272 Electroacoustic transducer being acoustical tight in the area of its air gap for its moving coil |
| 07/15/2004 | DE10317980A1 Loudspeaker system for acoustic and audio applications, comprises moving diaphragm made of synthetically produced polycrystalline diamond to which conductive tracks are fixed |
| 07/15/2004 | DE10261682A1 Wireless speech output system for mobile communication system, has electroacoustic transducer arranged in tooth, with electromagnetic energy received by moving coil and rectified |
| 07/14/2004 | EP1437914A2 A voice coil and a speaker that uses the voice coil |
| 07/14/2004 | EP1437030A1 An electro-acoustic transducer with two diaphragms |
| 07/14/2004 | CN2626168Y Doublefaced moving-coil type electroacoustic convertor |
| 07/14/2004 | CN2626167Y Coaxial loudspeaker with one magnet shared by four units |
| 07/14/2004 | CN1512818A Electroacoustic converter and electronic device |
| 07/14/2004 | CN1157991C Speaker device |
| 07/13/2004 | US6763120 Speaker |
| 07/08/2004 | WO2003061338A8 Light exhibiting speaker |
| 07/08/2004 | US20040131255 Automatic digital music library builder |
| 07/08/2004 | US20040131223 Electromagnetic transducer having a hybrid internal/external magnet motor geometry |
| 07/07/2004 | CN2624571Y Zero horizontal separation same-source audio basin radiation high pitch loudspeaker |
| 07/07/2004 | CN2624570Y Active servo low-distortion loud-speaker system |
| 07/07/2004 | CN1510966A Guard of loundspeaker |
| 07/07/2004 | CN1157088C Multifunctional music centre apparatus |
| 07/06/2004 | US6760462 Planar diaphragm loudspeakers with non-uniform air resistive loading for low frequency modal control |
| 07/06/2004 | US6760461 Vehicle loudspeaker |
| 07/01/2004 | US20040125981 Electroacoustic transducer |
| 07/01/2004 | US20040125980 Electromagnetic transducer with asymmetric diaphragm |
| 07/01/2004 | US20040125971 Combination loudspeaker unit |
| 06/30/2004 | EP1434463A2 Electroacoustic transducer and electronic apparatus with such a transducer |
| 06/30/2004 | CN2622976Y 高音扬声器 Tweeter |
| 06/30/2004 | CN2622975Y Shell viberating loudspeaker |
| 06/30/2004 | CN2622974Y Low inductive electromagnetic driver |
| 06/30/2004 | CN2622973Y Full-frequency constant loudspeakers |
| 06/30/2004 | CN1509119A Push-push multiple magnetic air gap transducer |
| 06/30/2004 | CN1156197C Horn-type loudspeaker system |
| 06/29/2004 | US6757404 Loud speaker, diaphragm and process for making the diaphragm |
| 06/29/2004 | US6757403 Electroacoustic transducers |
| 06/29/2004 | US6757402 Knockdown speaker |
| 06/24/2004 | US20040120542 Loudspeaker with a bellow-shaped surround |
| 06/24/2004 | DE10256448A1 Two-way or multi-way loudspeaker has dynamic loudspeaker section and high-frequency unit formed by piezoelectric loudspeaker with piezo element firmly attached to center of diaphragm |
| 06/23/2004 | CN1507302A Loudspeaking device |
| 06/23/2004 | CN1155291C Electroacoustic transducer including elastic contact formed with at least one bended part |
| 06/22/2004 | US6754363 Structure of dual magnetic loop type receiver |
| 06/22/2004 | US6754362 Speaker and speaker system |
| 06/17/2004 | WO2004052051A1 Voice coil insertion jig, speaker producing method using the jig, and speaker produced by using the jig |