| Patents for H04R 11 - Transducers of moving-armature or moving-core type (1,828) |
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| 10/13/2004 | CN2648751Y One-magnet two-unit coaxial loudspeaker |
| 10/13/2004 | CN1171502C Signal converter |
| 10/12/2004 | US6804369 Electroacoustic transducer |
| 09/23/2004 | US20040184636 Armature for a receiver |
| 09/16/2004 | DE10308225A1 Loudspeaker for hearing aid or mobile telephone comprises electromagnets separated by gap through which membrane passes |
| 09/14/2004 | US6792126 Information processing device and speaker unit applicable thereto |
| 09/08/2004 | CN1527639A Loudspeaker |
| 09/02/2004 | US20040168852 Apparatus for energy transfer in a balanced receiver assembly and manufacturing method thereof |
| 08/26/2004 | US20040167377 Apparatus for creating acoustic energy in a balanced receiver assembly and manufacturing method thereof |
| 08/19/2004 | US20040161130 Electroacoustic transducer, and electronic device using the same |
| 08/18/2004 | EP1448017A2 Electroacoustic transducer, and electronic device using the same |
| 08/18/2004 | CN1522094A Electroacoustic transducer, and electronic device using the same |
| 08/18/2004 | CN1163106C Electro-magnetic converter used in acousticon, especially in electronic acousticon |
| 08/12/2004 | US20040156515 Acoustic device |
| 08/05/2004 | WO2004064483A2 Actuator for an active noise control system |
| 08/05/2004 | US20040151340 Armature for a receiver |
| 08/05/2004 | US20040151334 Actuator for an active noise control system |
| 08/04/2004 | CN1161000C Mechanical acoustic dividing network and transducer thereof |
| 07/29/2004 | US20040146175 Resonance frequency correction method and vibration speaker |
| 07/28/2004 | EP1441560A1 Speaker having magnetic member installed on diaphragm |
| 07/28/2004 | CN1159951C Electromagnetic transducer and portable communication device |
| 07/21/2004 | CN1514674A Digitalized electroacoustic loud speaker |
| 07/20/2004 | US6763571 Armature assembly for balanced moving armature magnetic transducer and method of locating and adjusting same |
| 07/15/2004 | US20040136561 Speaker having magnetic member installed on diaphragm |
| 07/01/2004 | US20040124795 Vibrator controlling circuit |
| 06/29/2004 | US6757403 Electroacoustic transducers |
| 06/10/2004 | WO2004049757A1 An apparatus for energy transfer in a balanced receiver assembly and manufacturing method thereof |
| 06/10/2004 | WO2004049756A1 An apparatus for creating acoustic energy in a balance receiver assembly and manufacturing method thereof |
| 06/09/2004 | EP1425934A1 Miniature speaker with integrated signal processing electronics |
| 06/03/2004 | US20040105564 Electrical acoustic converter |
| 06/02/2004 | CN1501737A Electric-to-mechanical-to-acoustic converter and portable terminal unit |
| 05/26/2004 | EP1422971A1 Implantable transducer for hearing systems and method for adjusting the frequency response of such a transducer |
| 05/20/2004 | US20040097785 Implantable transducer for hearing aids and process for tuning the frequency response of one such transducer |
| 05/12/2004 | CN2615975Y Double-magnetic loop vibrating & sounding multifunction inverter |
| 04/29/2004 | US20040081325 Waterproof acoustic structure applicable in conjunction with speaker |
| 04/27/2004 | US6727789 Magnetic transducers of improved resistance to arbitrary mechanical shock |
| 04/20/2004 | US6724908 Method for producing electric-mechanical acoustic converter |
| 04/15/2004 | US20040071308 Low cost broad range loudspeaker and system |
| 04/08/2004 | WO2004030407A2 Drive mechanism |
| 04/08/2004 | WO2004030406A1 Electroacoustic transducer |
| 04/07/2004 | EP1179285B1 Electromagnetic transducer and portable communication device |
| 03/31/2004 | EP1402756A2 Magnetic transducers of improved resistance to arbitrary mechanical shock |
| 03/31/2004 | CN1486580A 扬声器驱动器 Speaker Driver |
| 03/31/2004 | CN1144499C Electro-mechanical-acoustic transducer and prtable teminal unit |
| 03/10/2004 | CN1141857C Electroacoustic transducer |
| 02/19/2004 | US20040031891 Mounting bracket system |
| 02/12/2004 | WO2003094571A3 Electro-dynamic planar loudspeakers |
| 02/12/2004 | US20040028254 Electromagnetic driver for a planar diaphragm loudspeaker |
| 02/05/2004 | US20040022410 Planar speaker wiring layout |
| 02/05/2004 | US20040022409 Film attaching system |
| 02/05/2004 | US20040022408 Frame structure |
| 02/05/2004 | US20040022407 Film tensioning system |
| 02/05/2004 | US20040022406 Magnet arrangement for loudspeaker |
| 01/21/2004 | EP1382221A2 Loudspeaker driver |
| 01/15/2004 | US20040009716 Electrical connectors for electro-dynamic loudspeakers |
| 01/15/2004 | US20040008863 Frequency response enhancements for electro-dynamic loudspeakers |
| 01/15/2004 | US20040008862 Conductors for electro-dynamic loudspeakers |
| 01/15/2004 | US20040008858 Acoustically enhanced electro-dynamic loudspeakers |
| 01/13/2004 | US6678388 Electroacoustic transducer |
| 12/24/2003 | CN1132500C Electromagnetic acoustic transducer |
| 12/10/2003 | CN1130952C Electroacoustic transducer |
| 12/02/2003 | US6658134 Shock improvement for an electroacoustic transducer |
| 12/02/2003 | US6658133 Electromagnetic transducer and portable communicating device |
| 11/25/2003 | US6654477 Receiver and method of construction |
| 11/20/2003 | WO2003096744A1 Means at electromagnetic vibrator |
| 11/13/2003 | WO2003094571A2 Electro-dynamic planar loudspeakers |
| 11/05/2003 | EP1247427B1 Vibration balanced receiver |
| 11/05/2003 | CN1454443A 骨传导振动器 Bone conduction vibrator |
| 10/30/2003 | WO2002039781A3 Loudspeaker driver |
| 10/30/2003 | US20030200820 Force sensing device |
| 10/29/2003 | CN1452303A Vibration controlling circuit |
| 10/22/2003 | EP1355280A2 Vibrator controlling circuit |
| 10/22/2003 | CN2582310Y Improved horn speaker |
| 10/15/2003 | EP1353531A2 Acoustic transducer having reduced thickness |
| 10/09/2003 | US20030190053 Acoustic transducer having reduced thickness |
| 10/08/2003 | EP1169886B1 Microphone for a hearing aid |
| 09/17/2003 | CN2574326Y Horn speaker sound head |
| 09/11/2003 | US20030169895 Method for producing electric-mechanical acoustic converter |
| 09/09/2003 | US6618487 Electro-dynamic exciter |
| 08/27/2003 | EP1044584A4 Mechanical acoustic crossover network and transducer therefor |
| 08/27/2003 | CN1438820A Loud-speaker and manufacturing method |
| 08/27/2003 | CN1119790C Electromagnetic sound generator |
| 08/21/2003 | US20030156732 Speaker and method of manufacturing the same |
| 08/20/2003 | EP1336322A2 Electromagnetic driver for a planar diaphragm loudspeaker |
| 08/20/2003 | EP1336321A2 Electrodynamic bending moment driver |
| 08/20/2003 | EP1336320A1 Bone conduction vibrator |
| 08/13/2003 | EP1219135B1 Electro-acoustic transducer with resistance to shock-waves |
| 07/31/2003 | WO2002102112A3 Magnetic transducers of improved resistance to arbitrary mechanical shock |
| 07/31/2003 | US20030142845 Vibrating device for axially vibrating a movable member |
| 07/24/2003 | US20030138114 Armature assembly for balanced moving armature magnetic transducer and method of locating and adjusting same |
| 07/16/2003 | EP1166598B1 Electroacoustic transducer with a diaphragm, and method for fixing a diaphragm in such transducer |
| 07/02/2003 | CN1113570C Electromagnetic sounding body |
| 06/11/2003 | CN2555595Y Omnidirectional radiation loudspeaker |
| 06/10/2003 | US6577743 Electroacoustic transducer and structure for mounting an electroacoustic transducer |
| 05/27/2003 | US6570993 Electric-mechanical-acoustic converter and method for producing the same |
| 05/15/2003 | WO2002063921A3 Vibration balanced receiver |
| 05/14/2003 | EP1310135A2 Low capacitance receiver coil |
| 05/14/2003 | CN1108695C Method and interface device for switching group transferring data stream |
| 05/13/2003 | US6563933 Electromagnetic transducer for generating sound in hearing aids, particularly electronic hearing aids |
| 05/02/2003 | EP1305977A2 A microphone assembly |