| Patents for H04R 7 - Diaphragms for electromechanical transducers; Cones (6,555) |
|---|
| 01/31/1995 | EP0647386A4 Loudspeaker cone suspension rim having integral gasket. |
| 01/25/1995 | CN2188269Y Horn sounder |
| 01/12/1995 | DE4321506A1 Loudspeaker diaphragm for a sound generator |
| 01/11/1995 | EP0541646B1 Panel-form loudspeaker |
| 01/10/1995 | US5380960 Process for the preparation of films or diaphragms for acoustic applications |
| 01/05/1995 | WO1995001080A1 Planar diaphragm loudspeaker with counteractive weights |
| 01/04/1995 | EP0632675A1 Diaphragm-edge integral moldings for speakers, acoustic transducers comprising same and method for fabricating same |
| 01/04/1995 | EP0632674A1 Diaphragm for use with an electro-acoustic transducer and method of producing the same |
| 12/27/1994 | US5376853 Electroacoustic transducer |
| 12/14/1994 | EP0400048B1 Improved audio transducer with controlled flexibility diaphragm |
| 12/07/1994 | EP0627868A1 Loudspeaker driver surrounding |
| 12/06/1994 | US5371805 Speaker and speaker system employing the same |
| 11/17/1994 | EP0624452A1 Film molding method and apparatus |
| 11/10/1994 | WO1994026076A1 Planar electromagnetic transducer |
| 11/10/1994 | CA2161510A1 Planar electromagnetic transducer |
| 11/01/1994 | US5360959 Direct current resistance welding machine and method of controlling the same |
| 10/25/1994 | CA2086557C Loudspeaker suspension |
| 10/05/1994 | EP0618752A1 Loudspeaker structure |
| 09/14/1994 | EP0614600A1 Loudspeaker. |
| 08/31/1994 | EP0613321A1 Loudspeaker diaphragm for use in electroacoustic transducer |
| 08/10/1994 | EP0610001A2 Loudspeaker |
| 08/04/1994 | DE4302593A1 Loudspeaker membrane with spherical and conical membranes |
| 07/19/1994 | US5330695 Rubber and plastic |
| 07/12/1994 | US5329072 Acoustic diaphragm |
| 06/28/1994 | US5325439 Loudspeaker apparatus |
| 06/23/1994 | WO1994014294A1 Audio transducer with flexible foam enclosure |
| 06/23/1994 | DE4312159C1 Electrodynamic transducer for headphone or microphone |
| 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 |
| 06/07/1994 | US5319718 Loudspeaker cone and method for making same |
| 06/01/1994 | CN2167496Y Loud-speaker with changable diaphragm |
| 05/31/1994 | US5317642 Loudspeakers having torque drive radiators |
| 05/25/1994 | CN2166567Y Horn hanging side with thermal plasticity rubber materials |
| 04/27/1994 | EP0594435A1 Speaker cone and process for production thereof |
| 04/27/1994 | CN2163496Y Loudspeaker voice membrane |
| 04/23/1994 | CA2108592A1 Speaker cone and process for production thereof |
| 04/21/1994 | DE4335087A1 Conversion of mechanical vibration in acoustic signals and converter - uses flexible plastic plate suspended at centre in contact with driver and having specified material, dimensions and suspension |
| 04/19/1994 | US5304746 Reduction of standing waves and intermodulation distortion in electro-acoustic transducer |
| 04/14/1994 | WO1994008435A1 Diffusing volume electroacoustic transducer |
| 03/30/1994 | CN1084689A 号筒扬声器 Horn Speaker |
| 03/23/1994 | EP0441881B1 Shallow loudspeaker with slotted magnet structure |
| 03/22/1994 | US5297214 Loudspeaker structure |
| 03/10/1994 | DE4228957A1 Centring device for loudspeaker diaphragm - uses coiled flat spring ring made of rectangular cross=section extruded plastics material |
| 03/08/1994 | US5293009 Dust protection cap for conical loudspeaker |
| 02/23/1994 | CN2157633Y Monitoring station for moving communication system |
| 02/16/1994 | CN2156642Y On/off converter for 900 MHz no central address selecting moveable communication system |
| 02/01/1994 | US5283836 Audio transducer |
| 02/01/1994 | US5283397 Diaphragm for electrodynamic transducer |
| 02/01/1994 | US5283027 Heating dies before mold; ressing cooling; releasing |
| 01/19/1994 | EP0579475A1 Vibration plate of a speaker and method for producing same |
| 01/19/1994 | CN2153920Y Adjustable sound volume diaphragm for microphone |
| 01/12/1994 | EP0577601A1 Sound output device |
| 12/01/1993 | EP0571825A1 Loudspeaker bead with damping lip |
| 11/25/1993 | WO1993023967A1 Audio transducer improvements |
| 11/25/1993 | WO1993023966A1 Loudspeaker cone suspension rim having integral gasket |
| 11/04/1993 | DE4213991A1 Loudspeaker membrane - comprises sandwich structure with carbon fibre facings and rubber core for better elasticity in impulse plane |
| 11/02/1993 | US5259036 Diaphragm for dynamic microphones and methods of manufacturing the same |
| 10/28/1993 | WO1993021743A1 Planar-type loudspeaker with dual density diaphragm |
| 10/26/1993 | US5256837 Paper cone for cone type speaker |
| 10/19/1993 | US5255328 Dynamic microphone |
| 09/28/1993 | CA1322588C Audio transducer with controlled flexibility diaphragm |
| 09/14/1993 | US5245669 Electroacoustic transducer |
| 09/07/1993 | US5243662 Electrodynamic sound generator for hearing aids |
| 09/07/1993 | CA1322042C Speaker |
| 08/31/1993 | US5241140 Speaker diaphragm |
| 08/25/1993 | EP0556786A2 Speaker |
| 07/27/1993 | US5231672 Plane-surfaced waved out-diffusion triangular beam-typed resonant board |
| 07/27/1993 | US5230328 Electromagnetic acoustic pressure pulse source |
| 07/22/1993 | WO1993014608A1 Method and apparatus for making a loudspeaker cone and surround assembly |
| 07/22/1993 | DE4201040A1 Loudspeaker with radially slotted diaphragm - has slots filled with elastic material over most part of diaphragm |
| 07/21/1993 | EP0552040A1 Method and apparatus for making a loudspeaker cone and surround assembly |
| 06/10/1993 | WO1993011649A1 Loudspeaker |
| 06/08/1993 | CA1318965C Shallow loudspeaker with slotted magnet structure |
| 05/19/1993 | EP0541646A1 Panel-form loudspeaker. |
| 05/12/1993 | EP0493450A4 Planar speakers |
| 04/27/1993 | US5206466 Diaphragm for speaker |
| 04/27/1993 | US5205897 Curing adhesion primer to improve bonding between device and adhesive |
| 04/27/1993 | CA2011690C Microphones |
| 04/14/1993 | CN2130021Y P.p foam material trumpet conical cone |
| 03/31/1993 | EP0533810A1 Microwave antennas. |
| 03/30/1993 | US5198624 Audio transducer with controlled flexibility diaphragm |
| 03/09/1993 | US5191697 Loudspeaker damper and method of manufacturing the same |
| 03/03/1993 | EP0529143A2 Diaphragm for loudspeaker or microphone |
| 03/03/1993 | CN1020006C Thin-thickness type recording disk reproducing apparatus |
| 02/03/1993 | EP0525400A2 Diaphragm for cone loudspeaker |
| 02/02/1993 | US5182846 Process for producing a diaphragm for acoustic appliances |
| 01/19/1993 | US5180785 Diaphragm and method for producing same |
| 01/14/1993 | DE4134943C1 Spherical diaphragm for loudspeaker - is mounted for driving by central, hollow sphere of light but rigid material |
| 01/12/1993 | US5179595 Electrodynamic-fluidic transducer element for pneumatic loudspeaker |
| 01/05/1993 | US5177733 Sound recording playing apparatus with improved vibration plate |
| 12/30/1992 | CN2126492U Fully-flat transverse wave diffused-type triangle-beam type resonance plate |
| 11/25/1992 | EP0514690A1 Concave dust protection for cone-like loudspeaker |
| 11/19/1992 | EP0513667A1 Acoustic diaphragm and method for producing same |
| 11/10/1992 | US5162619 Diaphragm for a loudspeaker |
| 10/20/1992 | US5157731 Dome radiator speaker |
| 10/14/1992 | EP0508596A1 Electroacoustical transducer |
| 10/14/1992 | EP0508150A2 Loudspeaker with an element joining the suspension and the (built-in) seal |
| 10/07/1992 | EP0507655A1 Method of production of a diaphragm with high internal loss and high rigidity for an electrodynamic loudspeaker |
| 10/06/1992 | US5152938 Process for preparation of a wholly carbonaceous diaphragm for acoustic equipment use |
| 09/30/1992 | CA2062277A1 Electroacoustical transducing |
| 09/22/1992 | US5150419 Calotte-type treble loudspeaker |