| Patents for H04R 31 - Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor (5,050) |
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| 12/01/2004 | CN1178551C Micro loudspeaker |
| 11/30/2004 | US6826138 Method for aligning actuator assembly to a base in a miniature optical disk drive |
| 11/25/2004 | WO2004103017A1 Speaker |
| 11/25/2004 | US20040237111 Multimedia and entertainment system for an automobile |
| 11/25/2004 | US20040234096 Micro-speaker and method for assembling a micro-speaker |
| 11/25/2004 | US20040231911 Outdoor loudspeaker with passive radiator |
| 11/25/2004 | US20040231136 Magnesium diaphragm, method for manufacturing the same, and speaker using the diaphragm |
| 11/24/2004 | EP1480491A1 Thin speaker and method of manufacturing the speaker |
| 11/24/2004 | EP1480490A1 Magnesium speaker diaphragm, method of manufacturing the same, and speaker with such a diaphragm |
| 11/24/2004 | EP1479796A2 Piezoelectric single crystal device and fabrication method thereof |
| 11/23/2004 | US6820313 Method of manufacturing an ultrasound transducer and ultrasound transducer obtained by means of the method |
| 11/18/2004 | WO2004100606A1 A method for manufacturing a carrier element for a hearing aid and a carrier element for a hearing aid |
| 11/17/2004 | EP1476301A1 Improved dielectric coating for transduction drivers |
| 11/17/2004 | EP0847661B2 Acoustic device |
| 11/16/2004 | US6818092 Multi-layer electret having ultra-high charge stability and method of manufacturing thereof |
| 11/16/2004 | US6817084 Method for manufacturing a speaker apparatus |
| 11/11/2004 | WO2004098236A1 Speaker diaphragm |
| 11/11/2004 | US20040223423 Optical pick-up actuator and method for assembling an optical pick-up actuator |
| 11/11/2004 | DE102004011751A1 Piezoelektrischer elektroakustischer Wandler und sein Herstellungsverfahren A piezoelectric electro-acoustic transducer and its manufacturing method |
| 11/04/2004 | WO2004095882A1 Multi-layered membranes consisting of a plurality of materials, for the loudspeaker of a high fidelity loudspeaker cabinet |
| 11/04/2004 | WO2004095881A2 Beryllium acoustic transducer |
| 11/04/2004 | CA2521785A1 Multi-layered membranes consisting of a plurality of materials, for the loudspeaker of a high fidelity loudspeaker cabinet |
| 11/03/2004 | CN2653830Y Sensitivity reducing device for electret capacitor microphone |
| 11/03/2004 | CN2653829Y Improved speaker vibration membrane base material member |
| 10/21/2004 | US20040205958 Methods for fabricating MRAM device structures |
| 10/20/2004 | EP1469704A1 Voice coil insertion jig, speaker producing method using the jig, and speaker produced by using the jig |
| 10/20/2004 | EP1469701A2 Raised microstructures |
| 10/19/2004 | US6806593 Thin film electret microphone |
| 10/14/2004 | WO2004089036A2 Outdoor loudspeaker with passive radiator |
| 10/14/2004 | US20040201919 Magnetoresistive memory and method of manufacturing the same |
| 10/14/2004 | US20040201070 Self-aligned, low-resistance, efficient MRAM read/write conductors |
| 10/14/2004 | US20040200801 Manufacture having double sided features in a metal-containing web and manufacture and method for forming same in a liquid-based etch process |
| 10/14/2004 | CA2520179A1 Outdoor loudspeaker with passive radiator |
| 10/13/2004 | EP1467594A2 Loudspeaker |
| 10/13/2004 | CN1536932A Loudspeaker |
| 10/13/2004 | CN1536931A Piezoelectric electroacoustic converter and its mfg. method |
| 10/13/2004 | CN1536853A Loudspeaker fixture |
| 10/12/2004 | US6804368 Micro-speaker and method for assembling a micro-speaker |
| 10/07/2004 | US20040197007 Loudspeaker |
| 10/07/2004 | US20040195941 Piezoelectric electro-acoustic transducer and manufacturing method of the same |
| 10/06/2004 | CN1535556A Loadspeakers |
| 10/06/2004 | CN1533844A Adhesive coating device used for loudspeaker sticking |
| 10/06/2004 | CN1170457C Electrosonic energy transducer |
| 10/05/2004 | US6799361 Method for manufacturing an electroacoustical transducer comprising a membrane configuration |
| 09/30/2004 | US20040190748 Manufacturing method of speaker and speaker produced thereby |
| 09/29/2004 | EP1463377A2 Method of manufacturing a speaker by means of ultrasonic vibration welding, and speaker produced thereby |
| 09/28/2004 | US6796018 Method of forming a slider/suspension assembly |
| 09/23/2004 | US20040184636 Armature for a receiver |
| 09/22/2004 | CN1531721A Thin film acoustic resonator and method of manufacturing resonator |
| 09/22/2004 | CN1168067C Electroacoustic transducer and method of manufacture thereof |
| 09/21/2004 | US6795561 Panel drive |
| 09/16/2004 | WO2004080122A1 Electret condenser microphone |
| 09/15/2004 | CN1529885A High-speed one-time writing-in optical recording medium, optical-recording method and apparatus |
| 09/09/2004 | US20040174796 Optical recording medium |
| 09/09/2004 | DE10248764B4 Hörgerätegehäuse und Verfahren zu dessen Herstellung, sowie Hörgerät Hearing aid housing and method for its production, as well as hearing aid |
| 09/08/2004 | EP1316239B1 Method of producing hearing aids and a hearing aid |
| 09/08/2004 | CN1527637A Loudspeaker vibrating diaphragm, producing method of the same vibrating diaphragm and dynamic loudspeaker |
| 09/02/2004 | US20040168852 Apparatus for energy transfer in a balanced receiver assembly and manufacturing method thereof |
| 09/02/2004 | US20040168851 Wooden sheet;adhesion of paper or cloth; v-shaped; wetting with solution containing lubricant and water |
| 09/01/2004 | EP1453354A1 Electroacoustic transducer and process for producing the same |
| 09/01/2004 | EP1453352A1 Edge for speaker diaphragm and method for manufacturing the same |
| 09/01/2004 | CN1525793A Manufacturing method of elliptic loud speaker pad edge and dedicated device |
| 08/31/2004 | US6784600 Ultrasound diagnostic systems that use ultrasonic transducers to provide diagnostic information concerning the interior of the body through ultrasound imaging |
| 08/26/2004 | US20040167377 Apparatus for creating acoustic energy in a balanced receiver assembly and manufacturing method thereof |
| 08/26/2004 | DE10303244B3 Loudspeaker for sound reproduction system, has conical membrane of three-layer construction held in frame at edge and coil wound round cylinder extending from central aperture |
| 08/25/2004 | EP1450580A2 Speaker diaphragms, manufacturing methods of the same, and dynamic speakers |
| 08/25/2004 | CN1164145C Method for fabricating loudspeaker suspension device |
| 08/19/2004 | WO2003043747A8 Manufacture having double sided features in a metal-containing web formed by etching |
| 08/18/2004 | EP1446238A2 Ultrasonic printed circuit board transducer |
| 08/18/2004 | EP1446237A2 Manufacture having double sided features in a metal-containing web formed by etching |
| 08/11/2004 | EP1444864A1 Micro-mechanical sensors and method for production thereof |
| 08/11/2004 | CN1162043C Method of manufacturing a transducer having a diaphragm with a predetermined tension |
| 08/10/2004 | US6772855 Damper for speaker and method of producing the same |
| 08/05/2004 | US20040151340 Armature for a receiver |
| 08/05/2004 | DE10303263A1 Sensor module contains sealing arrangement that acoustically isolates microphone so that detection is only possible in direction perpendicular to active surface over opening in circuit board |
| 08/04/2004 | EP1443017A2 Multi-metal layer MEMS structure and process for making the same |
| 08/04/2004 | EP1009977B1 Wafer-fabricated electroacoustic transducer |
| 08/04/2004 | CN1517296A Flexible micro-electromechanical system changer and its manufacturing method and radio loud-speaker |
| 08/04/2004 | CN1517295A Manufacturing method of flexible micro-electromechanical system changer |
| 08/03/2004 | US6770491 Magnetoresistive memory and method of manufacturing the same |
| 07/29/2004 | US20040147132 Flexible MEMS transducer manufacturing method |
| 07/29/2004 | US20040145056 Multi-metal layer MEMS structure and process for making the same |
| 07/28/2004 | CN1516876A Multi-purpose assembling equipment for magnetic head pile component and its test process |
| 07/28/2004 | CN1516521A Loudspeaker diaphragm and its mfg. method |
| 07/28/2004 | CN1159950C Monolithic integrated capacitor type silicon base micro microphone and its producing process |
| 07/21/2004 | CN1158901C Miniature loudspeaker and its manufacturing method |
| 07/15/2004 | US20040136559 Voice coil and a speaker that uses the voice coil |
| 07/14/2004 | EP1437914A2 A voice coil and a speaker that uses the voice coil |
| 07/14/2004 | EP1437030A1 An electro-acoustic transducer with two diaphragms |
| 07/14/2004 | CN1513279A Production of non-planar membranes for electroacoustic converters |
| 07/14/2004 | CN1512821A Non pulp base material speaker sound cone and its producing process |
| 07/14/2004 | CN1512481A Improved transducer |
| 07/14/2004 | CN1157997C Method for producing acoustic device, speaker drive unit and speaker |
| 07/08/2004 | US20040131221 Speaker surround and method for producing the same |
| 07/06/2004 | US6759791 Multidimensional array and fabrication thereof |
| 07/06/2004 | US6758094 Ultrasonic transducer wafer having variable acoustic impedance |
| 07/06/2004 | US6757948 Method for manufacturing an ultrasonic array transducer |
| 07/01/2004 | WO2004006623A3 Multilayer loudspeaker diaphragm |
| 07/01/2004 | US20040123448 Methods for assembling or reworking a modular rotary actuator assembly for a rotatable media data storage device |
| 07/01/2004 | US20040123440 Methods for assembling or reworking a rotary actuator assembly for a media data storage device |