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Class Information
Number: 181/167
Name: Acoustics > Diaphragm > Critically defined material or coating
Description: Subject matter wherein the diaphragm is constructed of specific material or the diaphragm is covered or saturated, at least in part, with extraneous material.










Sub-classes under this class:

Class Number Class Name Patents
181/169 Fibrous material 89
181/170 Laminated type 98
181/168 Metallic material 39


Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
8672088 Phase plug and acoustic lens for direct radiating loudspeaker Mar. 18, 2014
8646570 Diaphragm of electric sound converter and its manufacturing method Feb. 11, 2014
8616329 Air coupled acoustic aperiodic flat lens Dec. 31, 2013
8544595 Carbonaceous acoustic diaphragm and method for manufacturing the same Oct. 1, 2013
8548188 Diaphragm, method making the same and loudspeaker using the same Oct. 1, 2013
8479872 Ring shaped membrane for an electro-acoustical loudspeaker Jul. 9, 2013
8442261 Diaphragm including a first vibrating part of a dome shape or flat shape and a second vibrating part of an annular shape and a loudspeaker using the diaphragm May. 14, 2013
8418802 Phase plug and acoustic lens for direct radiating loudspeaker Apr. 16, 2013
8320604 Composite loudspeaker cone Nov. 27, 2012
8272517 Water-proof sound-transmitting membrane, method for producing the water-proof sound-transmitting membrane, and electrical appliance including the water-proof sound-transmitting membrane Sep. 25, 2012
8261873 Electromagnetic linear drive source for logging-while-drilling/wireline acoustic applications Sep. 11, 2012
8256567 Diaphragm and speaker using same Sep. 4, 2012
8235167 Vibrating body for speaker and speaker device Aug. 7, 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
8215445 Electroacoustic transducer Jul. 10, 2012
8189851 Optically clear diaphragm for an acoustic transducer and method for making same May. 29, 2012
8181736 Phase plug and acoustic lens for direct radiating loudspeaker May. 22, 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
8172035 Waterproofing loudspeaker cones May. 8, 2012
8164911 Lightweight electronic device for automotive applications and method Apr. 24, 2012
8141676 Compound membrane and acoustic device using same Mar. 27, 2012
8141677 Ring shaped membrane for an electro-acoustical loudspeaker Mar. 27, 2012
8141678 Sound-permeable film, electronic component with sound-permeable film, and method of producing circuit board having electronic component mounted thereon Mar. 27, 2012
8135164 Speaker Mar. 13, 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
RE42490 Device and method for amplifying suction noise Jun. 28, 2011
7945069 Loudspeaker plastic cone body May. 17, 2011
7913808 Waterproofing loudspeaker cones Mar. 29, 2011
7878297 Acoustic transducer made of pure beryllium with directed radiation, with a concave-shaped diaphragm, for audio applications, in particular for acoustic enclosures Feb. 1, 2011
7877856 Method of manufacturing a speaker Feb. 1, 2011
7866439 Membrane for an electroacoustic transducer Jan. 11, 2011
7849958 Vibration system part for speaker device and manufacturing method thereof Dec. 14, 2010
7845461 Acoustic diaphragm and speaker Dec. 7, 2010
7795695 Integrated microphone Sep. 14, 2010
7775319 Diaphragm for speaker and manufacturing method therefor Aug. 17, 2010
7753164 Membranes made of cast polyarylate film Jul. 13, 2010
7726441 Acoustic vibratory plate Jun. 1, 2010
7717230 Device and method for amplifying suction noise May. 18, 2010
7708111 Acoustic diaphragm and method for manufacturing an acoustic diaphragm May. 4, 2010
7706564 Diaphragm and speaker Apr. 27, 2010
7686128 Speaker diaphragm and speaker Mar. 30, 2010
7677356 Acoustic material and method for making the same Mar. 16, 2010
7677355 Speaker diaphragms, manufacturing methods of the same, and dynamic speakers Mar. 16, 2010
7644801 Membrane with a high resistance against buckling and/or crinkling Jan. 12, 2010
7631723 Loudspeaker diaphragm and method for manufacturing the same Dec. 15, 2009
7591344 Peripheral component for audio equipment Sep. 22, 2009
7582191 Process for producing loudspeaker diaphragm, loudspeaker diaphragm produced by the process, and loudspeaker with the diaphragm Sep. 1, 2009
7558399 Vibrating plate of dynamic microphone and method of manufacturing the same Jul. 7, 2009
7546897 Speaker diaphragm and method of manufacturing speaker diaphragm Jun. 16, 2009

1 2 3 4










 
 
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