| Patents for H04R 9 - Transducers of moving-coil, moving-strip, or moving-wire type (11,486) |
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| 02/17/2005 | US20050036647 Acoustic transducer with mechanical balancing |
| 02/17/2005 | US20050036646 Magnet retention system in planar loudspeakers |
| 02/17/2005 | US20050036640 Small-size accessory with audio recording and playback device and transparent wall for holding and viewing an article |
| 02/16/2005 | EP1506691A2 Loudspeaker |
| 02/16/2005 | CN2679955Y Integrated tweeter for radio broadcasting |
| 02/16/2005 | CN2679954Y Voice coil wound by square wire |
| 02/16/2005 | CN1582062A Spiral Magnetic field full-frequency electroacoustic transducer |
| 02/15/2005 | US6856049 Voice coil linear actuator, apparatus using the actuator, and method for manufacturing the actuator |
| 02/10/2005 | US20050031154 Electromagnetic transducer having multiple magnetic air gaps whose magnetic flux is in a same direction |
| 02/10/2005 | US20050031153 Low-profile transducer |
| 02/10/2005 | US20050031152 Coil for an electroacoustic transducer |
| 02/10/2005 | US20050031151 Speaker with adjustable voice coil impedance |
| 02/10/2005 | US20050031147 Underwater entertainment system |
| 02/10/2005 | US20050031137 Calibration of an actuator |
| 02/10/2005 | US20050031134 Position detection of an actuator using infrared light |
| 02/10/2005 | US20050031117 Audio reproduction system for telephony device |
| 02/10/2005 | DE102004019848A1 Tonabnehmereinrichtung für Schlaginstrument Pickup mechanism for Percussion |
| 02/10/2005 | DE102004009902A1 Ausstattungsteil für ein Fahrzeug, insbesondere ein Kraftfahrzeug und Verwendung eines Ausstattungsteils als Lautsprecher Piece of equipment for a vehicle, especially a motor vehicle and use an equipment part as a speaker |
| 02/09/2005 | EP1504630A1 Means at electromagnetic vibrator |
| 02/09/2005 | CN1579110A Yoke of speaker |
| 02/09/2005 | CN1189060C 扬声器装置 The speaker device |
| 02/08/2005 | US6853734 Audio speaker damper with electrically conductive paths thereon to carry voice coil signals and a method therefore |
| 02/08/2005 | CA2192070C High gain acoustic transducer |
| 02/03/2005 | WO2005011323A2 Self-adjustment of acoustic and light amplitudes |
| 02/03/2005 | WO2004030407B1 Drive mechanism |
| 02/03/2005 | US20050025331 Loudspeaker coil suspension system |
| 02/03/2005 | US20050025317 Apparatus and method for monitoring speaker cone displacement in an audio speaker |
| 02/03/2005 | US20050022366 Method for manufacturing a dynamic speaker |
| 02/02/2005 | EP1502478A1 Loudspeaker with a first and a second diaphragm body |
| 02/02/2005 | EP1502477A1 Electromagnetic driving unit for a loudspeaker assembly |
| 02/02/2005 | CN2676555Y Magneto-motive horn |
| 02/02/2005 | CN1575040A Speaker and method of manufacturing the same |
| 02/02/2005 | CN1575039A Speaker and manufacturing method for the same |
| 02/02/2005 | CN1575029A A low-inductance electromagnetic driver for non-exciting magnetic circuit |
| 02/02/2005 | CN1188008C Multi-functional sound device |
| 02/01/2005 | US6850138 Vibration actuator having an elastic member between a suspension plate and a magnetic circuit device |
| 01/27/2005 | US20050018869 Electroacoustic transducer and process for producing the same |
| 01/27/2005 | DE202004011694U1 Loudspeaker magnet system with special geometry, extreme strength has upper pole plate consisting of ST37-2 or other metal, specified dimensions including M5 thread and 29 degree angle between inner and outer aperture circumferences |
| 01/26/2005 | EP1101273A4 Low frequency vibrator |
| 01/26/2005 | CN2674813Y Lighting loadspeaker single-body structure |
| 01/26/2005 | CN1186966C Loudspeaker and loudspeaker apparatus |
| 01/25/2005 | US6847726 Shorting rings in dual-coil dual-gap loudspeaker drivers |
| 01/25/2005 | US6847139 Multi-functional vibrating actuator |
| 01/20/2005 | US20050013461 Loudspeaker |
| 01/20/2005 | DE202004016949U1 Audio loudspeaker magnetic system has pole core enclosed by magnetic ring sandwiched between upper and lower pole plates of defined geometry |
| 01/19/2005 | CN1568636A Voice coil of speaker |
| 01/19/2005 | CN1568635A Method for producing repulsion magnetic circuit and its production system |
| 01/19/2005 | CN1568093A Minitype embeddable sound pickup array microphone and application thereof |
| 01/19/2005 | CN1568070A Planar series magnetic circuit double sided sounder |
| 01/18/2005 | US6845168 Speaker for an electronic instrument |
| 01/18/2005 | US6845166 Plane driving type electroacoustic transducer |
| 01/13/2005 | WO2005002926A1 Equipment element for a vehicle, in particular a motor vehicle and the use thereof in the form of a loudspeaker |
| 01/13/2005 | US20050009583 Directional wireless communication systems |
| 01/13/2005 | US20050008188 Loudspeaker with a double spider centering system |
| 01/13/2005 | US20050005430 Method for producing repulsion magnetic circuit and its production system |
| 01/12/2005 | CN2671276Y Sounder with double voice coil |
| 01/12/2005 | CN2671273Y Anti-coresonance structure of loudspeaker |
| 01/12/2005 | CN1565146A Electroacoustic transducer having a moving coil and having movable holding elements for the connecting leads of the moving coil |
| 01/12/2005 | CN1184853C Butterfly adjuster |
| 01/12/2005 | CN1184851C Electro-acoustic transducer and its producing method |
| 01/11/2005 | US6842530 Electric acoustic converter having a rear surface terminal |
| 01/11/2005 | US6842529 Speaker |
| 01/06/2005 | WO2004007097A8 Acoustic-signal emitting device for vehicles |
| 01/06/2005 | US20050002537 Resonant panel-form loudspeaker |
| 01/05/2005 | EP1493301A1 Microspeaker and method for assembling a microspeaker |
| 01/05/2005 | EP1492424A2 Sports binocular visor assembly and method |
| 01/05/2005 | CN2669540Y Dome loudspeaker with suboscillating membrane |
| 01/05/2005 | CN2668902Y Electric fan |
| 01/05/2005 | CN1183802C Multifunctional sound equipment |
| 01/05/2005 | CN1183801C Bone conduction transducer and bone conduction speaker headset therewith |
| 01/04/2005 | US6839444 Loudspeakers |
| 01/04/2005 | US6837333 Loudspeaker system with forced air circulation and control circuit therefor |
| 12/30/2004 | US20040267390 Portable music player and transmitter |
| 12/30/2004 | US20040264731 Speaker apparatus |
| 12/30/2004 | DE202004016536U1 Jet treble loudspeaker has rectangular, axially magnetized one-piece magnet element, and at least four 4.5 mm or more wide slots in front panel, which is arranged in front of membrane film |
| 12/29/2004 | WO2004114717A2 Improvements to loudspeaker driver assemblies |
| 12/29/2004 | EP1492382A2 A loudspeaker having double symmetric magnet-circuits, double voice coils and double dampers |
| 12/29/2004 | EP0792569A4 Low tcr wire in high power audio coils |
| 12/29/2004 | EP0732037A4 High gain acoustic transducer |
| 12/29/2004 | CN2667838Y Gas mask electroacoustical transducer |
| 12/29/2004 | CN2666738Y Double-electrode induction Hall electronic horn |
| 12/29/2004 | CN1182754C Loudspeaker |
| 12/28/2004 | US6836551 Loudspeaker |
| 12/28/2004 | US6834744 Speaker system |
| 12/28/2004 | CA2349752C Speaker structure |
| 12/23/2004 | WO2004112429A1 A low-inductance electromagnetic drive without driving the magnetic flux circuit |
| 12/23/2004 | WO2004061547A3 Automatic digital music library builder |
| 12/23/2004 | US20040258271 Method and system for providing eating/drinking services |
| 12/22/2004 | EP1489881A1 Planar speaker |
| 12/22/2004 | CN2666074Y Chip with high sensitivity used for silicon micro-capacitance microphone |
| 12/22/2004 | CN2666073Y Chip with high sensitivity used for silicon micro-capacitance microphone |
| 12/22/2004 | CN2666072Y Chip used for silicon micro-capacitance microphone |
| 12/22/2004 | CN2666071Y Equal magnetic field partition type loudspeaker |
| 12/22/2004 | CN2666070Y 改进的喇叭结构 Improved horn structure |
| 12/21/2004 | US6834114 Multifunction acoustic device |
| 12/16/2004 | WO2004110097A1 Loudspeaker, manufacturing method thereof, and mobile telephone using the same |
| 12/16/2004 | WO2004110095A1 Combined microphone-loudspeaker |
| 12/15/2004 | CN2664336Y Loudspeaker with neck ring |
| 12/15/2004 | CN2664335Y A four-unit coaxial loudspeaker |
| 12/15/2004 | CN1180657C Butterfly adjuster |