| Patents for H04R 9 - Transducers of moving-coil, moving-strip, or moving-wire type (11,486) |
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| 06/06/2001 | CN1298622A Shorting rings in dual-coil dual-gap loudspeaker drivers |
| 06/05/2001 | US6243479 Loudspeaker having pole piece with integral vent bores |
| 06/05/2001 | US6243473 Laptop computer with loudspeaker(s) |
| 06/05/2001 | US6243472 Fully integrated amplified loudspeaker |
| 05/31/2001 | WO2001039545A2 Loudspeaker with frame cooling structure |
| 05/31/2001 | WO2001039542A2 Speaker and motor vehicle assembly |
| 05/31/2001 | WO2001039369A1 Power booster amplifier |
| 05/31/2001 | WO2001039216A1 Isotropic compound and method for preparation thereof, isotropic bonded magnet, rotary machine and magnet roll |
| 05/31/2001 | DE19745337C2 Flächenkühlsystem für Schallwandler - Magnetantriebe Surface cooling system for transducers - magnetic drives |
| 05/29/2001 | US6237716 Standard-sized vibrating diaphragm speaker structure |
| 05/25/2001 | WO2001037607A2 Offset apex spider |
| 05/23/2001 | EP1102517A2 Electroacoustic transducer for hearing aids |
| 05/23/2001 | EP1101273A1 Low frequency vibrator |
| 05/23/2001 | DE10045221A1 Miniaturisierter, elektroakustischer Wandler Miniaturized electro-acoustic transducer |
| 05/23/2001 | CN2431698Y Nonpolarized all-band coaxial load-speaker |
| 05/23/2001 | CN2431697Y Load-speaker |
| 05/23/2001 | CN1296373A Electro-magnetic converter used in deaf-aid sounding especial in electronic deaf-aid sounding |
| 05/23/2001 | CN1296270A Magnet assembly and method for making same, small sized electric appliance using same |
| 05/22/2001 | US6236733 Loudspeaker |
| 05/17/2001 | WO2001035698A1 Flat speaker |
| 05/16/2001 | EP1100288A2 Acoustic radiator |
| 05/09/2001 | EP1098549A2 Electroacoustic transducer |
| 05/09/2001 | CN2429983Y High stable loudspeaker |
| 05/09/2001 | CN1294832A Vibration actuator having magnetic circuit elastically supported by spiral damper with increased compliance |
| 05/08/2001 | US6229903 Mounting structure for electromagnetic sound generator |
| 05/08/2001 | US6229902 Loudspeaker with frame cooling structure |
| 05/03/2001 | WO2001031975A2 Ultra low frequency transducer and loud speaker comprising same |
| 05/03/2001 | WO2001031974A2 Loudspeaker with improved cooling structure |
| 05/03/2001 | WO2000041492A3 Wide band loudspeaker with strip diaphragm |
| 05/02/2001 | EP1096830A2 High frequency transducer |
| 05/02/2001 | CN1293881A Speaker device |
| 04/26/2001 | WO2000054551A3 Apparatus including an electroacoustic transducer having terminal contacts which extend in the direction of the transducer axis and including a printed circuit board having mating contacts |
| 04/26/2001 | DE10044047A1 Loudspeaker has spider for additional support with undulations of varying heights |
| 04/25/2001 | EP1094686A1 Mobile telephone loudspeaker |
| 04/24/2001 | US6222931 High power acoustical transducer |
| 04/24/2001 | US6222929 Speaker having middle-high sound speakers |
| 04/19/2001 | WO2001028279A1 Speaker device |
| 04/19/2001 | DE19942883A1 Loudspeaker has flat membrane provided with conductor path coil supported in intermediate plane between 2 pairs of concentric discs and annular ferromagnetic elements |
| 04/19/2001 | CA2355216A1 Speaker device |
| 04/17/2001 | US6219433 Wax, copper foil flexible wire with wax and speakers using this flexible wire |
| 04/17/2001 | US6219431 Loudspeaker with improved cooling structure |
| 04/17/2001 | US6219425 Loudspeaker with heat radiating hole and electrical device employing the same |
| 04/12/2001 | WO2001026417A1 Loudspeaker |
| 04/11/2001 | CN2426664Y 音头 Ondo |
| 04/11/2001 | CN2426663Y 音头 Ondo |
| 04/11/2001 | CN1291118A Electromagnetic actuator and structure for mounting the same |
| 04/10/2001 | US6215887 Thin type speaker having a secondary diaphragm |
| 04/10/2001 | US6215881 Ceiling tile loudspeaker |
| 04/04/2001 | CN2426258Y Loudspeaker for communication |
| 04/04/2001 | CN1290115A Loudspeaker system and cooling device |
| 04/03/2001 | US6212284 Sound reproduction device |
| 03/29/2001 | WO2001022773A1 Planar-type loudspeaker with at least two diaphragms |
| 03/29/2001 | DE19940930A1 Elektrodynamischer Treiber Electrodynamic drivers |
| 03/28/2001 | CN2425469Y Outer magnetic loudspeaker magnetic loop |
| 03/27/2001 | US6208743 Electrodynamic acoustic transducer with magnetic gap sealing |
| 03/27/2001 | US6208742 Electro-acoustic dynamic transducer system for use in a loud speaker |
| 03/27/2001 | US6208237 Electro-mechanical and acoustic transducer for portable terminal unit |
| 03/22/2001 | WO2001020949A1 Diaphragm transducer |
| 03/21/2001 | EP1084592A1 Resonant panel-form loudspeaker |
| 03/21/2001 | EP1084591A1 Resonant panel-form acoustic devices |
| 03/21/2001 | CN2424595Y Hi-low sound integrated coaxial loudspeaker |
| 03/21/2001 | CN1288345A Loudspeaker |
| 03/20/2001 | US6205228 Horn loaded pleated ribbon high frequency acoustic transducer with substantially uniform coupling |
| 03/15/2001 | WO2001018132A2 Panel-shaped loudspeaker |
| 03/15/2001 | DE19936411A1 Dynamic acoustic transducer has two diaphragms connected in parallel and linked by acoustic channel in tubular body |
| 03/14/2001 | CN1287464A Magnetic suspension loudspeaker |
| 03/13/2001 | US6201878 Portable compact disc player |
| 03/08/2001 | WO2001017201A2 Apparatus for hands-free operation with two sound reproduction transducers |
| 03/07/2001 | CN1286889A Method and system for controlling propagation of magnetic fields by electrodynamic/magnetic transducers, especially in telecommunications devices |
| 03/06/2001 | US6198831 Panel-form loudspeakers |
| 03/01/2001 | WO2001015493A1 Double coils and double magnetic gaps transducer |
| 02/28/2001 | EP1079664A2 Electrodynamic driver |
| 02/28/2001 | EP1079662A2 Electro-acoustic micro-transducer having an improved dynamic and frequency range |
| 02/28/2001 | EP1078553A1 Sound reproduction device working according to the bending wave principle |
| 02/28/2001 | EP1078552A1 Device for dynamic excitation of panel loudspeakers |
| 02/28/2001 | CN1285706A Double-coil double-magnet gap transducer |
| 02/28/2001 | CN1285705A Small electricity-sound converter with three-mode replaying property |
| 02/22/2001 | WO2001013677A1 Low cost broad range loudspeaker and system |
| 02/21/2001 | EP1077586A2 Shock improvement for an electroacoustic transducer |
| 02/21/2001 | EP1077014A1 Driver for a flat acoustic panel |
| 02/21/2001 | CN2420806Y Double magnetic field loudspeaker |
| 02/20/2001 | US6192136 Inertial vibration transducers |
| 02/13/2001 | US6188775 Panel-form loudspeakers |
| 02/13/2001 | US6188774 Loudspeaker |
| 02/13/2001 | US6185809 Method of manufacturing a diaphragm for an electroacoustic transducer |
| 02/08/2001 | WO2000067523A3 Moving coil driver |
| 02/08/2001 | DE10021257A1 Loudspeaker frame has peripheral section of section to be subjected to trimming process which is treated and trimmed |
| 02/07/2001 | CN2418641Y Plane-loudspeaker fixing device |
| 02/07/2001 | CN1283067A Electroacoustic inverter unit possessing bisound source structure |
| 02/01/2001 | WO2001008447A2 Flat panel speaker |
| 02/01/2001 | WO2000065869A3 Bending-wave panel loudspeakers |
| 01/31/2001 | EP1073312A2 Electric-acoustic transducer having dual voice coil drivers |
| 01/31/2001 | EP1072168A1 Shorting rings in dual-coil dual-gap loudspeaker drivers |
| 01/31/2001 | CN2417656Y Anti-magnetic type full sonic frequency coaxial loud-speaker |
| 01/31/2001 | CN2417655Y Loud-speaker type transducer |
| 01/31/2001 | CN1282502A Moving-coil loudspeaker |
| 01/30/2001 | US6181799 Greetings or the like card |
| 01/25/2001 | WO2001006523A2 Magnet assembly |
| 01/25/2001 | WO2000048428A3 Exciter for imparting bending wave energy to a panel |
| 01/25/2001 | DE19954880C1 Electro-magnetic converter for sound production in hearing aid |