| Patents for H04R 7 - Diaphragms for electromechanical transducers; Cones (6,555) |
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| 05/04/2004 | US6731764 Speaker apparatus and electronic apparatus having speaker apparatus enclosed therein |
| 04/29/2004 | US20040079505 Paper tank; pulp dispersion reservoir; stirring; drainage |
| 04/29/2004 | DE10248034A1 Production of cone diaphragm having color patterns used on a loudspeaker to transmit sound, involves soaking the printed base material in high molecular resin material, and printing a layer of high molecular ink over the base material |
| 04/28/2004 | EP1414266A2 Active acoustic devices |
| 04/28/2004 | EP1413170A2 Electroacoustic transducer comprising a membrane with an improved pleats area |
| 04/28/2004 | EP1413166A1 Sound reproducing system using sound pressure |
| 04/28/2004 | CN1493169A Sound and vision system |
| 04/28/2004 | CN1492718A Sound producing device of speaker |
| 04/27/2004 | US6728389 Membrane support system |
| 04/27/2004 | US6725967 Low distortion loudspeaker cone suspension |
| 04/22/2004 | WO2004034735A1 Equalizable active electroacoustic device for panels, and method of converting the panels and assembling the devices |
| 04/22/2004 | US20040075573 Display signs |
| 04/22/2004 | CA2490872A1 Equalizable active electroacoustic device for panels, and method of converting the panels and assembling the devices |
| 04/21/2004 | EP1411747A2 Speaker surround and method for producing the same |
| 04/21/2004 | EP1410681A1 Production of non-planar membranes for electroacoustic converters |
| 04/21/2004 | EP1410680A1 Planar loudspeaker |
| 04/20/2004 | US6724910 Diaphragm stable through hygroscopic cycling |
| 04/20/2004 | US6723761 Microcellular foaming |
| 04/15/2004 | US20040071303 Compound sound generator |
| 04/15/2004 | US20040070294 Electroacoustic converter |
| 04/15/2004 | DE19757097B4 Schallwiedergabeanordnung Sound reproduction device |
| 04/15/2004 | DE10346593A1 Schallerzeuger Sound generator |
| 04/14/2004 | EP1408717A2 Combination loudspeaker unit |
| 04/14/2004 | CN1489880A Electroacoustic transducer |
| 04/14/2004 | CN1489879A Electrocoustic converter |
| 04/14/2004 | CN1146296C Vibration membrane for loudspeaker |
| 04/13/2004 | US6721436 Remote edge-driven panel speaker |
| 04/13/2004 | US6720708 Mechanical-to-acoustical transformer and multi-media flat film speaker |
| 04/08/2004 | WO2004030407A2 Drive mechanism |
| 04/08/2004 | WO2004030406A1 Electroacoustic transducer |
| 04/08/2004 | WO2004019652A3 Loudspeaker |
| 04/08/2004 | US20040066938 Loudspeaker |
| 04/08/2004 | DE202004001166U1 Vorrichtung zum Schutz der Membran von Lautsprechern Device for protecting the membrane of loudspeaker |
| 04/08/2004 | DE10010491B4 Geformte Lautsprechermembran und Verfahren zu deren Ausformung Shaped loudspeaker diaphragm and methods for their formation |
| 04/07/2004 | CN1488232A Structuro of diaphragm for optoacoustic transducer |
| 04/07/2004 | CN1487771A Acousto-electric inventer |
| 04/01/2004 | WO2004028199A1 Loudspeaker |
| 04/01/2004 | US20040062414 Speaker |
| 04/01/2004 | US20040062406 Diaphragm structure of light-sound converter |
| 04/01/2004 | DE10245567B3 Vorrichtung und Verfahren zum Anpassen eines Hörgeräts An apparatus and method for adapting a hearing device |
| 03/31/2004 | EP1404152A2 Device and method for fitting a hearing-aid |
| 03/31/2004 | EP1404150A1 Diaphragm structure of light sound converter |
| 03/31/2004 | EP0872157B1 Piezo speaker for improved passenger cabin audio systems |
| 03/31/2004 | CN1486580A 扬声器驱动器 Speaker Driver |
| 03/31/2004 | CN1144498C Resonant panel-form loudspeaker |
| 03/25/2004 | US20040057596 Loudspeaker systems |
| 03/24/2004 | CN2607708Y Non-suspended rim piston type vibration loadspeaker |
| 03/24/2004 | CN1143593C Acoustic device relying on bending wave action |
| 03/18/2004 | WO2004023199A1 Liquid crystal display device having sound output function and the like and electronic device using the same |
| 03/18/2004 | US20040052386 Panel form loudspeaker |
| 03/18/2004 | DE10025460B4 Hochtonlautsprecher Tweeter |
| 03/17/2004 | EP1398992A1 Rectangular panel-form loudspeaker and its radiating panel |
| 03/17/2004 | EP1398990A2 Flat panel sound radiator with fire protective back box |
| 03/17/2004 | EP1397938A2 Loudspeaker |
| 03/16/2004 | US6707922 Deformable loudspeaker |
| 03/11/2004 | WO2004021739A1 Dynamic micro speaker with dual suspension |
| 03/11/2004 | US20040045764 Flat panel sound radiator with fire protective back box |
| 03/11/2004 | DE10238325A1 Lautsprecher Speaker |
| 03/11/2004 | CA2438002A1 Flat panel sound radiator with fire protective back box |
| 03/10/2004 | CN1481196A Electroacoustic transducer and its mfg. method |
| 03/04/2004 | WO2004019652A2 Loudspeaker |
| 03/04/2004 | US20040042633 Electroacoustic transducer and method for manufacturing the same |
| 03/04/2004 | US20040042632 Directivity control of electro-dynamic loudspeakers |
| 03/04/2004 | US20040042628 Piezo-electric speaker |
| 03/03/2004 | EP1395083A2 A piezo-electric speaker |
| 03/02/2004 | US6700987 Loudspeaker |
| 02/26/2004 | WO2004017676A1 Compliant diaphragm for planar magnetic acoustic transducers |
| 02/26/2004 | WO2004017674A1 Loudspeaker with inverted cone |
| 02/26/2004 | WO2004017673A1 Loudspeaker having an outer edge |
| 02/26/2004 | WO2004017532A1 Subminiature bone vibrating speaker using the diaphragm and mobile phone thereby |
| 02/26/2004 | WO2001054454A3 Display apparatus with flat panel loudspeaker |
| 02/26/2004 | US20040037447 Rectangular panel-form loudspeaker and its radiating panel |
| 02/26/2004 | US20040037441 Speaker, speaker module, and electronic equipment using the speaker module |
| 02/25/2004 | EP1392080A2 Loudspeaker unit and assembly |
| 02/25/2004 | EP1297720B1 Electroacoustic transducer with replaceable diaphragm |
| 02/25/2004 | EP1110426B1 Panel form acoustic apparatus using bending waves modes |
| 02/25/2004 | CN1140158C Loudspeakers comprising phase uncorrelated diffuse sound source |
| 02/24/2004 | US6697496 Electroacoustic transducer comprising a membrane with an improved pleats area |
| 02/19/2004 | WO2004016042A1 Audio speaker cone apparatus and method of manufacture |
| 02/19/2004 | WO2003005764A3 Portable acoustic device |
| 02/19/2004 | WO2001045458A3 Acoustic devices |
| 02/19/2004 | US20040031891 Mounting bracket system |
| 02/18/2004 | EP1142447B1 Loudspeaker |
| 02/18/2004 | CN1476735A Loudspeaker having acoustic panel and electrical driver |
| 02/18/2004 | CN1476734A Speaker, speaker module, and electronic equipment using speaker module |
| 02/17/2004 | US6694039 Having cone of magnesium-lithium alloy with specified specific gravity, tensile strength, specific strength and internal loss, manufactured by stamping under normal temperature |
| 02/17/2004 | US6694038 Acoustic device |
| 02/17/2004 | US6694037 Spider-less loudspeaker with active restoring apparatus |
| 02/12/2004 | WO2003094571A3 Electro-dynamic planar loudspeakers |
| 02/12/2004 | US20040028254 Electromagnetic driver for a planar diaphragm loudspeaker |
| 02/12/2004 | US20040026585 Electro-dynamic loudspeaker mounting system |
| 02/12/2004 | US20040026164 Speaker diaphragm edge and its manufacturing method |
| 02/11/2004 | EP1388274A2 Acoustic member for a loudspeaker comprising a component having a selected frequency dependence and method of making same |
| 02/05/2004 | WO2004012478A1 One-magnet rectangular transducer |
| 02/05/2004 | US20040022410 Planar speaker wiring layout |
| 02/05/2004 | US20040022409 Film attaching system |
| 02/05/2004 | US20040022408 Frame structure |
| 02/05/2004 | US20040022407 Film tensioning system |
| 02/05/2004 | US20040022406 Magnet arrangement for loudspeaker |
| 02/05/2004 | DE10334062A1 Electroacoustic transducer e.g. telephone loudspeaker, has grooves formed in ring-shaped frame supporting membrane for providing sound outlet openings |