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Class Information
Number: 381/372
Name: Electrical audio signal processing systems and devices > Electro-acoustic audio transducer > Plural or compound reproducers > Headphone > Particular cup > Having mechanical or acoustic sound attenuation
Description: Subject matter in which the particular feature of a cup is designed to reduce noise.










Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8688036 Wireless communications headset system employing a loop transmitter that fits around the pinna Apr. 1, 2014
8675903 Acoustic porting for a portable communication device Mar. 18, 2014
8660288 Twin driver earphone Feb. 25, 2014
8651229 Hearing protection Feb. 18, 2014
8638963 Ear defender with concha simulator Jan. 28, 2014
8638969 Earphone, headset and ear pad Jan. 28, 2014
8594351 Equalized earphones Nov. 26, 2013
8577071 Shape-adaptable surface for an audio port Nov. 5, 2013
8422717 Adjustable audio headphone Apr. 16, 2013
8374372 Headset Feb. 12, 2013
8374373 High transmission loss headphone cushion Feb. 12, 2013
8363874 Receiver Jan. 29, 2013
8363876 Audiometric devices Jan. 29, 2013
8360068 Ear cup Jan. 29, 2013
RE43939 Headset noise reducing Jan. 22, 2013
8358799 Ambient noise isolation audio headphones having a layered dampening structure Jan. 22, 2013
8270657 Earphone device and sound generating apparatus equipped with the same Sep. 18, 2012
8259982 Reducing acoustic coupling to microphone on printed circuit board Sep. 4, 2012
8249285 Method and apparatus for producing non linear sound attenuation Aug. 21, 2012
8223984 System for forming a hearing protector, ear cup in such a system, and hearing protector formed by such a system Jul. 17, 2012
8213664 Shape-adaptable surface for an audio port Jul. 3, 2012
8180092 Converter system for an active noise compensation apparatus May. 15, 2012
8111857 In-ear headset and in-ear earphone Feb. 7, 2012
8111858 Supra-aural headphone noise reducing Feb. 7, 2012
8090134 Earphone device, sound tube forming a part of earphone device and sound generating apparatus Jan. 3, 2012
8073179 MEMS microphone package with RF insensitive MEMS microphone chip Dec. 6, 2011
8055007 Earphone having variable duct unit Nov. 8, 2011
7854294 Sound-attenuating earmuff having isolated double-shell structure Dec. 21, 2010
7853034 Ambient noise isolation audio headphones having a layered dampening structure Dec. 14, 2010
7813520 Hearing device and method for supplying audio signals to a user wearing such hearing device Oct. 12, 2010
7717226 Hearing protection cap May. 18, 2010
7703572 Sound-attenuating earmuff having isolated double-shell structure Apr. 27, 2010
7457428 Double hearing protection device Nov. 25, 2008
7356362 Headset structure with built-in audio source Apr. 8, 2008
7268669 Personal sensory reduction system, and method Sep. 11, 2007
7263195 In-ear monitor with shaped dual bore Aug. 28, 2007
7165647 Mechanical acoustic filter by erosion etching Jan. 23, 2007
7162051 Headphone Jan. 9, 2007
7035421 Earphone set Apr. 25, 2006
6788798 Method and arrangement for improving leak tolerance of an earpiece Sep. 7, 2004
6775390 Headset with movable earphones Aug. 10, 2004
6768803 Method and apparatus for selective acoustic signal filtering Jul. 27, 2004
6768804 Adjustable microphone boom with acoustic valve Jul. 27, 2004
6731771 Foam mounted receiver for communication headset May. 4, 2004
6597792 Headset noise reducing Jul. 22, 2003
6567525 Supra aural active noise reduction headphones May. 20, 2003
6466681 Weather resistant sound attenuating modular communications headset Oct. 15, 2002
6353938 Sound attenuating earmuff Mar. 12, 2002
6259796 Earpiece without impulse and high frequency noise Jul. 10, 2001
6163615 Circumaural ear cup audio seal for use in connection with a headset, ear defender, helmet and the like Dec. 19, 2000

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