Patents
Patents for H04R 13 - Transducers having an acoustic diaphragm of magnetisable material directly co-acting with electromagnet (404)
01/2006
01/25/2006CN2754302Y High-stable loudspeaker T-shape iron
01/18/2006CN1237847C Electro-acoustic transducer
12/2005
12/08/2005US20050270906 Resonator device and circuits for 3-d detection/receiving sonic waves, even of a very low amplitude/frequency, suitable for use in cybernetics
11/2005
11/30/2005CN1229771C Electromagnetic sounder
11/17/2005US20050254672 Bone conductive speaker
10/2005
10/06/2005DE102005011664A1 Mehrfunkions-Lautsprecher Mehrfunkions speakers
10/05/2005EP1224838A4 Electromagnetic transducer and portable communication device
09/2005
09/22/2005US20050207610 Multifunction speaker
09/21/2005CN1671251A Multifunction speaker
08/2005
08/17/2005CN1656849A Bone conductive speaker
07/2005
07/28/2005WO2005069586A1 Portable telephone using bone conduction device
07/28/2005CA2535671A1 Portable telephone using bone conduction device
07/19/2005US6920230 Electromagnetic transducer and portable communication device
06/2005
06/21/2005US6907955 Electromagnetic electroacoustic transducer
06/02/2005DE10052151B4 Vibrationslautsprecher Vibration speaker
03/2005
03/16/2005EP1515580A1 Bone conductive speaker
02/2005
02/08/2005US6853735 Receiver and portable communication device
02/02/2005CN1187732C Surface assembling type electromagnetic sound-producing device
01/2005
01/12/2005CN1184851C Electro-acoustic transducer and its producing method
01/05/2005CN1183801C Bone conduction transducer and bone conduction speaker headset therewith
12/2004
12/15/2004EP1486094A2 Resonator device and associated circuits
10/2004
10/26/2004US6809634 Buzzer-driving apparatus
10/19/2004US6807283 Electroacoustic transducer
10/07/2004US20040194285 Electro-acoustic transducer and method of manufacturing the same
09/2004
09/22/2004CN1168067C Electroacoustic transducer and method of manufacture thereof
09/08/2004CN1165886C Connector for sounder
09/01/2004CN1165202C Electromagnetic transducer and portable communication device
08/2004
08/31/2004US6783370 Connecting member for a sound generator
08/25/2004CN1163867C Electromagnetic electroacoustic transducer
08/04/2004CN1160870C Vibrating loudspeaker
06/2004
06/17/2004US20040113526 Electromechanical transducer and method for transforming energies
05/2004
05/26/2004CN1499483A 电磁声电变换器 Electromagnetic acoustic-electric transducer
05/26/2004CN1151702C Electromagnetic voice converter
05/06/2004US20040084417 Clad material for lead wire connection
05/06/2004US20040084242 Electromagnetic electroacoustic transducer
04/2004
04/15/2004WO2003079725A3 Resonator device and associated circuits
04/06/2004US6717305 Apparatus having an electroacoustic transducer forming a sound reproducing means and a part of vibration generating means
03/2004
03/24/2004CN1143594C Miniature electro-acoustic converter
03/17/2004CN1482835A Stealth and miniature wireless earphone
03/10/2004CN1141857C Electroacoustic transducer
02/2004
02/11/2004CN1138446C Electricity-sound transducer lead-wire terminal connection structure
01/2004
01/28/2004EP1384388A1 Electromechanical transducer and method for transforming energies
01/13/2004US6678388 Electroacoustic transducer
01/07/2004CN2598291Y Plane serial magnetic circuit and electricity-machinery-sound transducer
01/06/2004US6671952 Method of lead wire connection
12/2003
12/30/2003US6671383 Electromagnetic transducer and portable communication device
12/24/2003CN1132500C Electromagnetic acoustic transducer
12/23/2003US6668067 Electroacoustic transducer
12/23/2003US6668065 Bone-conduction transducer and bone-conduction speaker headset therewith
12/10/2003CN1130952C Electroacoustic transducer
12/04/2003WO2003101146A1 Bone conductive speaker
12/04/2003CA2487391A1 Bone conductive speaker
11/2003
11/25/2003US6654478 Electroacoustic transducer
11/19/2003CN1128564C Method of ultrasonic welding for resin-case
11/05/2003CN1127284C Sounder
10/2003
10/29/2003CN1126428C Electro-acoustic conversion device
10/15/2003CN1124771C Electroacoustic transducer
10/09/2003WO2003084285A1 Sound-to-vibration conversion apparatus
10/01/2003CN1122960C Sound generator for portable device
09/2003
09/30/2003US6628800 Electroacoustic transducer and method for manufacturing the same
09/25/2003WO2003079725A2 Resonator device and associated circuits
09/24/2003CN2575908Y User/relay switching interface circuit
08/2003
08/27/2003CN1119790C Electromagnetic sound generator
07/2003
07/29/2003US6600400 Electromagnetic electro-acoustic transducer
07/03/2003US20030123691 Electromagnetic transducer and protable communication device
07/01/2003US6587397 Electroacoustic transducer
06/2003
06/18/2003CN1425264A Bone conduction transducer and bone conduction speaker headset therewith
05/2003
05/28/2003CN1110225C Terminal connection method of coil and terminal connection structure of coil
05/21/2003CN1419395A 电声换能器 Electro-acoustic transducer
05/08/2003US20030086584 Electroacoustic transducer
05/08/2003US20030084562 Manufacturing method for electroacoustic transducer
04/2003
04/16/2003CN1106134C Mfg. method of electromagnetic sound converter
03/2003
03/13/2003US20030048913 Bone-conduction transducer and bone-conduction speaker headset therewith
03/04/2003US6529107 Speaker comprising ring magnet
01/2003
01/15/2003EP1275268A1 Bone-conduction transducer and bone-conduction speaker headset therewith
12/2002
12/31/2002US6501845 Electroacoustic transducer
12/10/2002US6492899 Electromagnetic converter having superior anti-shock property
12/05/2002US20020180593 Buzzer-driving apparatus
11/2002
11/26/2002US6487300 Vibration speaker
11/21/2002WO2002093976A1 Sound-to-vibration conversion apparatus
11/13/2002CN1379389A Electromagnetic sound generating apparatus
10/2002
10/30/2002EP1253044A2 Buzzer driving apparatus
10/30/2002CN1377025A Lead wire connecting structure and method and coating materials used in lead wire connection
10/24/2002WO2002085065A1 Electromechanical transducer and method for transforming energies
10/03/2002US20020142795 Receiver and portable communication device
10/02/2002CN2514606Y Flat vibrating diaphragm loudspeaker
10/02/2002CN1372781A Electromagnetic transducer and portable communication device
09/2002
09/26/2002US20020136424 Electromagnetic transducer and portable communication device
09/18/2002EP1241920A2 Electromagnetic sound producing device.
09/12/2002US20020126868 Electromagnetic sound producing device
08/2002
08/29/2002WO2000027166A9 Transducer concepts for hearing aids and other devices
08/29/2002US20020117327 Structure and method of lead wire connection, and clad material for lead wire connection
08/13/2002US6433674 Electromagnetic sound generator
08/07/2002CN1362895A Apparatus having an electroacoustic transducer forming sound reproducing means and part of vibration generating means
07/2002
07/24/2002EP1224838A1 Electromagnetic transducer and portable communication device
07/17/2002CN1359251A Electro-acustic transducer
07/10/2002CN1087584C Method for mfg. of electromagnetic sound converter
07/10/2002CN1087583C Method of fabricating electroacoustic transducer
06/2002
06/20/2002US20020076079 Electroacoustic transducer
06/20/2002US20020075110 Speaker comprising ring magnet
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