| Patents for H04R 9 - Transducers of moving-coil, moving-strip, or moving-wire type (11,486) |
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| 07/21/1998 | US5784471 Hearing aid with an electrodynamic acoustic transducer |
| 07/16/1998 | WO1998031188A1 Loudspeakers |
| 07/16/1998 | DE19647306A1 Cage-less moving coil loudspeaker oscillation unit |
| 07/16/1998 | CA2274007A1 Loudspeakers |
| 07/15/1998 | CN1187746A Loudspeaker |
| 07/08/1998 | CN2285946Y Composite diaphragm for electric microphone |
| 07/07/1998 | US5778086 Electronic device connection terminal |
| 07/07/1998 | US5776597 Made of impregnated cloth containing blends of aromatic polyesters and polyamides, to increase water and heat resistance |
| 07/01/1998 | CN1186405A Two way speaker having dual magnetic circuit |
| 06/18/1998 | WO1998026632A1 Electrodynamic transducer |
| 06/17/1998 | EP0847676A1 Inertial vibration transducers |
| 06/17/1998 | EP0847675A1 Vibration transducers |
| 06/17/1998 | EP0847662A1 Loudspeakers comprising panel-form acoustic radiating elements |
| 06/17/1998 | EP0847661A2 Acoustic device |
| 06/16/1998 | US5768395 Double ended field coil actuator |
| 06/10/1998 | DE19651033A1 Elektrodynamischer Wandler An electrodynamic transducer |
| 06/09/1998 | US5764784 Electroacoustic transducer |
| 06/03/1998 | EP0845920A2 Electro-mechanical and acoustic transducer for portable terminal unit |
| 06/03/1998 | CN1038635C Double-brake water-wave type resonant plate |
| 06/02/1998 | US5760501 Compression driver motor structure |
| 05/27/1998 | EP0843950A1 Passive radiator and system comprising the passive radiator |
| 05/27/1998 | EP0843949A1 Electrodynamic loudspeaker and system comprising the loudspeaker |
| 05/26/1998 | US5757946 Magnetic fluid loudspeaker assembly with ported enclosure |
| 05/26/1998 | US5757945 Terminal for speaker |
| 05/26/1998 | US5757942 Speaker unit with an improved acoustic equalizer |
| 05/14/1998 | WO1998020705A1 Improved suspension for high power pleated ribbon transducer |
| 05/14/1998 | WO1998020703A1 Improved horn loaded pleated ribbon high frequency acoustic transducer with substantially uniform coupling |
| 05/14/1998 | DE19646439A1 Moving coil loudspeaker chassis with linear coil bearing and coil stop protection |
| 05/13/1998 | EP0775432B1 An electrodynamic transducer |
| 05/12/1998 | US5751828 Magnetic circuit unit for loud-speaker and method of manufacturing the same |
| 05/06/1998 | CN1038294C Hi-Fi technique for electric speaker |
| 05/05/1998 | US5748760 Dual coil drive with multipurpose housing |
| 05/05/1998 | US5748759 Loud speaker structure |
| 04/29/1998 | CN2280395Y Super thin type loud-speaker |
| 04/28/1998 | CA2137075C Loudspeaker |
| 04/23/1998 | DE19643308A1 Electrodynamic convertor esp. for active noise control |
| 04/22/1998 | CN1038179C Electroacoustic transducer |
| 04/21/1998 | US5742561 Transversely driven piston transducer |
| 04/15/1998 | EP0836362A2 Loudspeaker |
| 04/14/1998 | US5740265 Loudspeaker unit and loudspeaker system employing the unit |
| 04/14/1998 | US5740264 Miniature electroacoustic transducer |
| 04/14/1998 | US5739480 Speaker base for alternatively mounting different drivers |
| 04/09/1998 | DE19631293A1 Flat membrane type electroacoustic transducer e.g. for acoustic loudspeaker |
| 04/08/1998 | EP0835040A1 Loudspeaker |
| 04/02/1998 | WO1998014032A1 Magnetic fluid loudspeaker assembly with ported enclosure and method of determining parameters thereof |
| 04/01/1998 | CN2277613Y Moulded edge loud-speaker trunk |
| 03/31/1998 | US5734734 For use with loudspeakers |
| 03/19/1998 | DE19637847A1 Electroacoustic transducer design for radiating broad-band audio signals |
| 03/17/1998 | US5729617 Magnet system |
| 03/17/1998 | US5729616 Centering diaphragm |
| 03/10/1998 | US5727077 Electroacoustic transducer comprising a closing member |
| 03/04/1998 | CN1175181A Series piled loudspeake casing |
| 02/25/1998 | CN2275317Y Combined base for high and low vice loud speaker |
| 02/25/1998 | CN2275316Y 2.25 inch external magnetic electric cane plastic londspeaker |
| 02/25/1998 | CN1174485A Low-distortion and low-noise microphone |
| 02/24/1998 | US5721379 For generating ultrasound waves in an electrically conducting sample |
| 02/18/1998 | CN1173685A Vibration actuator for pager |
| 02/17/1998 | US5719946 Loudspeaker for higher audio frequencies and a manufacturing method thereof |
| 02/11/1998 | EP0823828A2 Speaker and speaker system employing the same |
| 02/11/1998 | CN1173105A Pseudo-zero impedance loudspeaking technology and loudspeaking system |
| 02/11/1998 | CN1173104A Camber reflection loudspeaking device |
| 02/10/1998 | US5717775 Voice coil and loudspeaker structure |
| 02/04/1998 | EP0821861A1 Dual coil drive with multipurpose housing |
| 02/03/1998 | US5715324 Speaker having magnetic circuit |
| 02/03/1998 | US5714722 Loudspeaker |
| 01/29/1998 | WO1998004093A1 Taut armature reciprocating impulse transducer |
| 01/29/1998 | DE19631573A1 Electro=acoustic transducer e.g. for loudspeaker or microphone |
| 01/29/1998 | DE19630168A1 Coaxial loudspeaker arrangement e.g. for installing in motor vehicle |
| 01/28/1998 | EP0821540A2 Voice coil contacts arrangement |
| 01/27/1998 | US5712598 Driving apparatus for electrostatic converting means |
| 01/21/1998 | EP0753238A4 Method of manufacturing a loudspeaker spider |
| 01/15/1998 | WO1998002017A1 Inverted loudspeakers |
| 01/13/1998 | US5708721 Coil assemblies |
| 01/06/1998 | US5704613 Methods for sealing and unsealing using a magnetically permeable solid-based medium |
| 12/31/1997 | CN2271787Y Conial cone rack of loudspeaker |
| 12/30/1997 | US5701657 Method of manufacturing a repulsion magnetic circuit type loudspeaker |
| 12/29/1997 | EP0814637A2 Method for producing a diaphragm for an electroacoustic transducer |
| 12/29/1997 | EP0814633A1 Digital loudspeaker with sound volume control |
| 12/24/1997 | CN2271228Y Loudspeaker diffuser paper |
| 12/23/1997 | US5701358 Isobaric loudspeaker |
| 12/23/1997 | US5701357 Loudspeaker structure with a diffuser |
| 12/17/1997 | EP0812521A1 Audio voice coil adaptor ring |
| 12/17/1997 | CN1168073A Double cone loudspeaker |
| 12/16/1997 | US5699439 Loudspeakers |
| 12/10/1997 | CN1167561A Apparatus and method of enhancing audio signals |
| 12/04/1997 | WO1997046047A1 Passive radiator and system comprising the passive radiator |
| 12/04/1997 | WO1997046046A1 Electrodynamic loudspeaker and system comprising the loudspeaker |
| 12/03/1997 | EP0810813A2 Loudspeaker assembly |
| 12/03/1997 | EP0810810A2 Digital loudspeaker and sound reproduction system employing such a loudspeaker |
| 12/03/1997 | CN2269686Y Suspending edge for horn |
| 12/03/1997 | CN2269685Y Driver with linear quick resetting voice coil in loudspeaker |
| 11/26/1997 | EP0809416A2 Speaker apparatus |
| 11/26/1997 | EP0809415A2 Loudspeaker |
| 11/26/1997 | EP0809414A2 Loudspeaker with moving coil |
| 11/26/1997 | CN2269040Y Speaker with fixer |
| 11/18/1997 | US5689573 Frequency-dependent amplitude modification devices for acoustic sources |
| 11/12/1997 | EP0806883A2 Loudspeaker |
| 11/12/1997 | CN2267593Y Wire for loud-speaker |
| 11/11/1997 | US5687248 Light weight and low magnetic leakage loudspeaker |
| 11/11/1997 | US5687244 Bone conduction speaker and mounting system |