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Class Information
Number: 181/170
Name: Acoustics > Diaphragm > Critically defined material or coating > Laminated type
Description: Subject matter comprising plural layers or surfaces, adhered or cohered to each other.










Patents under this class:
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Patent Number Title Of Patent Date Issued
8646570 Diaphragm of electric sound converter and its manufacturing method Feb. 11, 2014
8340341 Coated speaker dome Dec. 25, 2012
8320604 Composite loudspeaker cone Nov. 27, 2012
8284964 Compound membrane, method of manufacturing the same, and acoustic device Oct. 9, 2012
8256567 Diaphragm and speaker using same Sep. 4, 2012
8235168 Diaphragm for speaker, frame for speaker, dust cap for speaker, speaker and apparatus using them, and method for manufacturing component for speaker Aug. 7, 2012
8230966 Diaphragm for speaker, frame for speaker, dust cap for speaker, speaker and apparatus using them, and method for manufacturing component for speaker Jul. 31, 2012
8177021 Diaphragm for speaker, frame for speaker, dust cap for speaker, speaker and apparatus using them, and method for manufacturing component for speaker May. 15, 2012
8141676 Compound membrane and acoustic device using same Mar. 27, 2012
8122996 Diaphragm for speaker, frame for speaker, dust cap for speaker, speaker and apparatus using them, and method for manufacturing component for speaker Feb. 28, 2012
8002079 Diaphragm for speaker, speaker using the diaphragm for speaker, and process for producing the diaphragm for speaker Aug. 23, 2011
7849958 Vibration system part for speaker device and manufacturing method thereof Dec. 14, 2010
7845461 Acoustic diaphragm and speaker Dec. 7, 2010
7775319 Diaphragm for speaker and manufacturing method therefor Aug. 17, 2010
7726441 Acoustic vibratory plate Jun. 1, 2010
7708111 Acoustic diaphragm and method for manufacturing an acoustic diaphragm May. 4, 2010
7631723 Loudspeaker diaphragm and method for manufacturing the same Dec. 15, 2009
7546897 Speaker diaphragm and method of manufacturing speaker diaphragm Jun. 16, 2009
7467686 Speaker diaphragms, manufacturing methods of the same, and dynamic speakers Dec. 23, 2008
7332215 Resin-molded component and method for manufacturing thereof as well as diaphragm for loudspeaker Feb. 19, 2008
6912288 Piezoelectric electroacoustic transducer and manufacturing method of the same Jun. 28, 2005
6814181 Electrically conductive damper device for speaker Nov. 9, 2004
6804371 Speaker having a laser vibration diaphragm Oct. 12, 2004
6790506 Carbon fiber layer for acoustic diaphragm Sep. 14, 2004
6742622 Molded foam resin, process for forming the same and speaker diaphragm consisting of the same Jun. 1, 2004
6644182 Method of producing cone diaphragm having color patterns Nov. 11, 2003
6560348 Contact connections May. 6, 2003
6453049 Acoustic diaphragm Sep. 17, 2002
6427017 Piezoelectric diaphragm and piezoelectric speaker Jul. 30, 2002
6334504 Molded foam resin, process for forming the same and speaker diaphragm consisting of the same Jan. 1, 2002
6332508 Loudspeaker and method for producing the same Dec. 25, 2001
6275598 Sound reproduction device Aug. 14, 2001
6247551 Panel-form loudspeaker Jun. 19, 2001
6237716 Standard-sized vibrating diaphragm speaker structure May. 29, 2001
6097829 Fiber-honeycomb-fiber sandwich speaker diaphragm and method Aug. 1, 2000
6039145 Diaphragm-edge integral moldings for speakers, acoustic transducers comprising same and method for fabricating same Mar. 21, 2000
6002648 Slotted cylinder marine siesmic method and source Dec. 14, 1999
5796054 Loudspeaker diaphragm Aug. 18, 1998
5793002 Loudspeaker vibrating diaphragm and methods for its production Aug. 11, 1998
5744761 Diaphragm-edge integral moldings for speakers and acoustic transducers comprising same Apr. 28, 1998
5473121 Acoustic vibration plate Dec. 5, 1995
5425107 Planar-type loudspeaker with dual density diaphragm Jun. 13, 1995
5380960 Process for the preparation of films or diaphragms for acoustic applications Jan. 10, 1995
5352506 Diaphragm Oct. 4, 1994
5274199 Acoustic diaphragm and method for producing same Dec. 28, 1993
5259036 Diaphragm for dynamic microphones and methods of manufacturing the same Nov. 2, 1993
5241140 Speaker diaphragm Aug. 31, 1993
5206466 Diaphragm for speaker Apr. 27, 1993
5205897 Method of bonding loudspeaker diaphragm Apr. 27, 1993
5198624 Audio transducer with controlled flexibility diaphragm Mar. 30, 1993

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