| Patents for H04R 9 - Transducers of moving-coil, moving-strip, or moving-wire type (11,486) |
|---|
| 08/10/1994 | CN2174021Y 磁力扬声器 Magnetic speaker |
| 08/10/1994 | CN1090703A Electroacoustic transducer |
| 08/02/1994 | US5335287 Loudspeaker utilizing magnetic liquid suspension of the voice coil |
| 08/02/1994 | US5335284 Coneless, no-moving-parts speaker |
| 07/21/1994 | WO1994016536A1 Speaker containing dual coil |
| 07/06/1994 | EP0605400A1 Dynamic loudspeaker |
| 07/06/1994 | EP0604766A2 Moving coil-bonding for loudspeakers |
| 06/23/1994 | DE4243308A1 Electrodynamic headphone transformer |
| 06/21/1994 | US5323469 Conical loudspeaker having a conical stabilizing element joined between an underside of a speaker membrane and an outside surface of a speaker moving coil carrier |
| 06/14/1994 | US5321763 Body sense speaker |
| 06/14/1994 | US5321762 Voice coil actuator |
| 06/09/1994 | DE4241212A1 Drive system for moving coil loudspeakers - has moving coil supplied by central contact discs with coil springs loading carrier coupled to coil |
| 05/31/1994 | US5317642 Loudspeakers having torque drive radiators |
| 05/25/1994 | CN2166568Y Simple pickup for telephone |
| 05/25/1994 | CN1087218A Efficient high power low-frequency speaker |
| 05/24/1994 | US5315663 Passive loudspeaker enclosure for a television receiver |
| 05/11/1994 | CN2164625Y Improved structure tweeter and bass loudspeaker |
| 05/04/1994 | EP0595169A2 Loudspeaker assembly |
| 04/27/1994 | CN2163497Y Small diameter loudspeaker |
| 04/14/1994 | WO1994008435A1 Diffusing volume electroacoustic transducer |
| 04/13/1994 | EP0591837A1 Light-weight loudspeaker |
| 04/13/1994 | CN2162064Y Antimagnetic loudspeaker |
| 04/12/1994 | US5303209 Electroacoustic transducer having a partition wall and a mask wall |
| 04/06/1994 | CN2161042Y Loudspeaker |
| 03/23/1994 | EP0587910A1 Speaker |
| 03/23/1994 | EP0587804A1 Audio transducer improvements |
| 03/23/1994 | EP0441881B1 Shallow loudspeaker with slotted magnet structure |
| 03/23/1994 | CN2159641Y Non-contact electric speaker for vehicle |
| 03/22/1994 | US5297214 Loudspeaker structure |
| 03/15/1994 | US5295195 Magnetic circuit in a loudspeaker |
| 03/03/1994 | DE4190521C1 Auf Körperschall ansprechendes Mikrofon On-borne sound appealing microphone |
| 02/24/1994 | DE4326676A1 Fastening esp. plastics elements together - by interference fitting and upsetting of projection on one element |
| 02/22/1994 | US5288955 Wind noise and vibration noise reducing microphone |
| 02/15/1994 | US5287413 Dual voice coil sound reproducing device |
| 02/10/1994 | DE4225854A1 Low depth medium or woofer loudspeaker - has magnetic system fitted in acoustic funnel of diaphragm |
| 02/09/1994 | EP0582120A1 Coaxial speaker unit |
| 02/09/1994 | EP0582119A1 Tagboard for loudspeakers |
| 02/03/1994 | WO1994003026A1 Audio transducer with etched voice coil |
| 02/03/1994 | WO1994003024A1 Loudspeaker |
| 02/02/1994 | EP0581129A1 Magnet system for electroacoustic transducers |
| 02/01/1994 | US5283836 Audio transducer |
| 01/25/1994 | US5282245 Tubular bi-directional microphone with flared entries |
| 01/12/1994 | EP0577601A1 Sound output device |
| 01/04/1994 | US5276276 Coil transducer |
| 12/22/1993 | EP0574387A1 Electrodynamic loudspeaker with cooling arrangement |
| 12/14/1993 | US5270676 Method of making elements of a magnetic circuit in a loudspeaker |
| 12/01/1993 | CN2148449Y Electric horn for vehicle |
| 12/01/1993 | CN2148448Y Electrodynamic loudspeaker |
| 11/17/1993 | CN2146824Y Twin loudspeaker |
| 11/16/1993 | US5263093 Microphone device in use in for communication apparatus for motorcycle |
| 10/19/1993 | US5255328 Dynamic microphone |
| 10/14/1993 | WO1993020667A1 Noise cancelling transducer |
| 10/14/1993 | WO1993020666A1 Speaker |
| 10/13/1993 | EP0565181A1 Electrodynamic receiver for a telephone handset |
| 09/28/1993 | US5249237 Audio transducer improvements |
| 09/28/1993 | US5249236 Wiring structure of loudspeaker |
| 09/28/1993 | CA1322588C Audio transducer with controlled flexibility diaphragm |
| 09/23/1993 | DE4215519C1 Hi-fi loudspeaker with foil membrane - has coils attached to membrane corresponding to radial magnetic field lines of concentric magnetic rings of drive system |
| 09/21/1993 | US5246353 Air breezing pump |
| 09/15/1993 | CN1076325A Hi-Fi technique for electric speaker |
| 09/07/1993 | US5243662 Electrodynamic sound generator for hearing aids |
| 09/07/1993 | US5243151 Conical loudspeaker |
| 09/07/1993 | US5243150 Ribbon transducers |
| 09/01/1993 | EP0557392A1 Loudspeaker with coated voice coil |
| 08/25/1993 | EP0556786A2 Speaker |
| 08/25/1993 | CN2141156Y Superthin circuit board direct-welding loud-speaker |
| 08/11/1993 | CN2140121Y Inside-outside permanent moving-coil loudspeaker |
| 08/11/1993 | CN1075240A Body sense speaker |
| 08/04/1993 | EP0553525A1 Bodily sensed speakers |
| 08/04/1993 | EP0553499A2 Frequency-dependent amplitude modification devices for accoustic sources |
| 07/20/1993 | US5230021 Audio transducer improvements |
| 06/10/1993 | WO1993011649A1 Loudspeaker |
| 06/09/1993 | CN2135889Y Improved loudspeaker structure |
| 06/08/1993 | CA1318965C Shallow loudspeaker with slotted magnet structure |
| 06/01/1993 | US5216723 Permanent magnet transducing |
| 05/26/1993 | CN2134764Y Improved moving-coil receiving microphone |
| 05/25/1993 | US5214710 Permanent magnet system with associated coil arrangement |
| 05/19/1993 | EP0541646A1 Panel-form loudspeaker. |
| 05/18/1993 | US5212736 Ribbon speaker |
| 05/18/1993 | US5212735 Wide-ribbon loudspeaker |
| 05/12/1993 | EP0493450A4 Planar speakers |
| 05/11/1993 | US5210805 Transducer flux optimization |
| 05/05/1993 | CN2132366Y Loudspeaker |
| 04/28/1993 | EP0538702A2 Cone-loudspeaker |
| 04/28/1993 | CN1020389C Series magnetic circuit and electric circuit system of electroacoustic transducer |
| 04/27/1993 | CA2011690C Microphones |
| 04/21/1993 | EP0537705A2 A loudspeaker |
| 04/07/1993 | EP0535297A2 Spacer for coaxial loudspeakers |
| 03/30/1993 | US5199005 Electromagnetic drive assembly for under water sonar transducer |
| 03/30/1993 | US5198624 Audio transducer with controlled flexibility diaphragm |
| 03/23/1993 | US5197104 Electrodynamic loudspeaker with electromagnetic impedance sensor coil |
| 03/17/1993 | EP0531691A2 Moving coil system for an electromagnetic transducer |
| 03/16/1993 | US5195143 Acoustical ribbon transducer loudspeaker system |
| 03/09/1993 | US5191697 Loudspeaker damper and method of manufacturing the same |
| 03/03/1993 | EP0529143A2 Diaphragm for loudspeaker or microphone |
| 02/18/1993 | WO1993003586A1 Voice coil actuator |
| 02/11/1993 | DE4126121A1 Dynamic car loudspeaker with conical diaphragm - has permanent magnet of smaller dia. than that of oscillation coil into which it penetrates |
| 02/03/1993 | EP0525400A2 Diaphragm for cone loudspeaker |
| 01/26/1993 | CA1313254C Induction speaker without leads and voice coil |
| 01/19/1993 | US5181253 Loudspeaker assembly |