H04R 13 - Transducers having an acoustic diaphragm of magnetisable material directly co-acting with electromagnet

Patents for H04R 13 - Transducers having an acoustic diaphragm of magnetisable material directly co-acting with electromagnet (404)
06/2002
06/20/2002	US20020074878 Electroacoustic transducer
06/19/2002	EP1215935A2 Electroacoustic transducer
06/05/2002	CN2494585Y Full-compass electric loudspeaker
05/2002
05/23/2002	WO2001091514A9 Electromagnetic transducer and portable communication device
05/14/2002	US6389148 Electric-acoustic transducer having moving magnet and transducing method thereof
05/01/2002	CN1347256A Electromagnetic transducer and portable communication device
04/2002
04/16/2002	US6373959 Electroacoustic transducer
04/10/2002	CN2485910Y Audio pick-up
04/03/2002	EP1194002A2 Electromagnetic transducer and portable communication device
03/2002
03/28/2002	US20020037089 Electromagnetic transducer and portable communication device
03/20/2002	CN1341254A Electroacoustic transducer and method of manufacture thereof
03/20/2002	CN1340802A Electric sound transducer
03/20/2002	CN1340801A Electric sound transducer
03/19/2002	US6359541 Surface-mounted electromagnetic sound generator
03/06/2002	EP1185140A2 Electroacustic transducer
03/06/2002	CN1080530C Miniature speeching body
02/2002
02/28/2002	US20020025058 Electroacoustic transducer
02/28/2002	US20020025052 Electroacoustic transducer
02/21/2002	US20020021819 Electroacoustic transducer
01/2002
01/23/2002	EP1173291A1 Apparatus having an electroacoustc transducer forming a sound reproducing means and a part of vibration generating means
01/23/2002	CN1332594A Full duplex cordless earphone for wired telephone set
01/03/2002	WO2001060530A8 Apparatus having an electroacoustic transducer forming a sound reproducing means and a part of vibration generating means
12/2001
12/19/2001	EP1164574A1 Electroacoustic transducer and method of manufacture thereof
12/19/2001	CN1076574C Improved distortion low noise microphone
11/2001
11/29/2001	WO2001091514A1 Electromagnetic transducer and portable communication device
11/07/2001	CN1321294A Electromagnetic electroacoustic transducer
10/2001
10/25/2001	WO2001080598A1 Bone-conduction transducer and bone-conduction speaker headset therewith
10/17/2001	EP1146773A2 Electromagnetic sound generator
10/17/2001	CN1317782A Electromagnetic sounder
10/11/2001	US20010028722 Electroacoustic transducer
10/11/2001	US20010028303 Electromagnetic sound generator
10/10/2001	CN1316725A Electroacoustic transducer and making method thereof
09/2001
09/26/2001	CN1071920C Electro-magnetic acoustic exchanger and method for winding coil of same
09/12/2001	CN1312540A Connector for sounder
09/05/2001	EP1130945A2 Electroacoustic transducer
09/05/2001	CN1311506A Electroacoustic transducer
08/2001
08/30/2001	US20010017923 Electroacoustic transducer
08/30/2001	US20010017491 Apparatus having an electroacoustic transducer forming a sound reproducing means and a part of vibration generating means
08/29/2001	EP1128359A1 Electromagnetic electroacoustic transducer
08/29/2001	CN1310457A Ring magnet and its loudspeaker
08/23/2001	WO2001060530A1 Apparatus having an electroacoustic transducer forming a sound reproducing means and a part of vibration generating means
08/23/2001	US20010016452 Connecting member for a sound generator
08/15/2001	CN1308418A Vibrating loudspeaker
08/09/2001	US20010012239 Electroacoustic transducer
08/08/2001	EP1122979A2 Electroacoustic transducer
08/01/2001	EP1120995A2 Electroacoustic transducer and method of manufacturing the same
08/01/2001	EP1120991A2 Electroacoustic transducer and attachment structure thereof
07/2001
07/26/2001	US20010009586 Electroacoustic transducer and method of manufacturing the same
07/26/2001	US20010009585 Electroacoustic transducer and attachment structure thereof
07/05/2001	US20010006488 Electroacoustic transducer and method for manufacturing the same
07/04/2001	CN1302171A Electro-acoustic transducer and its producing method
07/03/2001	US6256397 Body-sensible swinging and vibrating apparatus
06/2001
06/28/2001	WO2001046943A1 Electroacoustic transducer and method of manufacture thereof
06/28/2001	DE10052151A1 Vibrational loudspeaker for portable communication device, e.g. portable telephone, has single-phase coil which generates vibration to move up vibrator component vertically by interaction with vibrator
06/27/2001	EP1111959A2 Electroacoustic transducer and method for manufacturing the same
05/2001
05/15/2001	US6233346 Surface-mounted electromagnetic sound generator
04/2001
04/18/2001	CN1292194A Mobile telephone with loudspeaker
03/2001
03/15/2001	WO2001018787A1 Electromagnetic electroacoustic transducer
03/14/2001	EP1082872A1 Electric-acoustic transducer having moving magnet and transducing method thereof
02/2001
02/06/2001	US6185310 Planar magnetic acoustical transducer stamped pole structures
01/2001
01/03/2001	CN1278636A Sound generator for portable device
12/2000
12/20/2000	CN1277792A Electric-acoustic transducer having moving magnet and transducing method thereof
11/2000
11/21/2000	US6150924 Surface-mounted electromagnetic sound generating body
10/2000
10/31/2000	US6141430 Electroacoustic transducer
10/31/2000	US6141427 Bone-conduction speaker
10/26/2000	WO2000027166A3 Transducer concepts for hearing aids and other devices
10/24/2000	CA2083988C Balanced armature transducers with transverse gap
10/18/2000	EP1044548A1 Mobile telephone with a loudspeaker
09/2000
09/27/2000	CN1268016A Electroacoustical converter
08/2000
08/29/2000	US6111971 Electroacoustic transducer
08/22/2000	USRE36828 Electroacoustic transducer
08/22/2000	US6108432 Surface mount electromagnetic sound producing device
08/01/2000	US6097828 Electroacoustic transducer
06/2000
06/02/2000	WO2000032013A1 Electric-acoustic transducer having moving magnet and transducing method thereof
05/2000
05/17/2000	CN1253463A Electromagnetic transducer and portable communication equipment
05/11/2000	WO2000027166A2 Transducer concepts for hearing aids and other devices
05/11/2000	WO2000027096A1 Mobile telephone with a loudspeaker
05/10/2000	EP0999722A2 Electromagnetic transducer and portable communication device
05/09/2000	US6061459 Surface-mounted electromagnetic sound generating body
02/2000
02/08/2000	US6023519 Electroacoustic transducer
02/08/2000	US6023518 Electromagnetic sound generator
01/2000
01/04/2000	US6011856 Electroacoustic transducer and electronic equipment using the same
12/1999
12/01/1999	CN1236938A Electromagnetic sound generator
11/1999
11/11/1999	DE19818988A1 Electronic apparatus with electro-acoustic transducer e.g. for mobile telephone
10/1999
10/26/1999	US5974157 Small electroacoustic transducer
10/13/1999	CN1231468A Surface assembling tpe electromagnetic sound-producing device
10/05/1999	USRE36327 Electroacoustic transducer and method of fabricating the same
09/1999
09/28/1999	US5960096 Electroacoustic transducer
09/14/1999	US5953437 Electroacoustic transducer
07/1999
07/13/1999	US5923769 Electroacoustic transducer
06/1999
06/16/1999	CN2324742Y Electromagnetic sounder T-iron structural member
05/1999
05/19/1999	CN2319989Y Internal magnetic steel dual magneti route coaxial whole frequency loudspeaker
05/11/1999	US5903068 Electroacoustic transducer
05/04/1999	US5901235 Enhanced efficiency planar transducers
04/1999
04/21/1999	CN1214607A Electrocoustic transducer
04/01/1999	WO1999016288A1 Enhanced efficiency planar transducers
03/1999
03/30/1999	US5889732 Sounder
12/1998
12/15/1998	CA2142886C Electromagnetic transducer
11/1998
11/18/1998	CN1040822C Electromagnetic transducer
11/04/1998	CN1040606C Electracoustic transducer and method of fabricating the same

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