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Class Information
Number: 181/295
Name: Acoustics > Sound-modifying means > Space absorbers
Description: Subject matter comprising structures of sound absorbing material for absorbing acoustic energy in rooms or similar chambers within which the structure is enclosed.










Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8689934 Sound absorbing structure Apr. 8, 2014
8668046 Baffle Mar. 11, 2014
8636104 Acoustically absorptive panel Jan. 28, 2014
8631901 Acoustic structure Jan. 21, 2014
8573356 Adjustable device for acoustic modification Nov. 5, 2013
8360201 Sound absorbing structure and sound chamber Jan. 29, 2013
8270627 Adaptive noise control system Sep. 18, 2012
8184820 Indirect acoustic transfer control of noise May. 22, 2012
8157052 Acoustic structure Apr. 17, 2012
8144889 Noise control system using smart materials Mar. 27, 2012
8136630 Architectural acoustic device Mar. 20, 2012
8132644 Method and apparatus for the reduction of sound Mar. 13, 2012
8028791 Sound reflective acoustic panel Oct. 4, 2011
8006802 Acoustic structure and acoustic room Aug. 30, 2011
8005235 Multi-chamber noise control system Aug. 23, 2011
7971680 Acoustic systems for lighting in suspended ceilings Jul. 5, 2011
7819221 Lightweight acoustic damping treatment Oct. 26, 2010
7762375 Soundproofing material Jul. 27, 2010
7703575 Three-dimensional tessellated acoustic components Apr. 27, 2010
7574833 Acoustic device for use on office partitions Aug. 18, 2009
7571790 Sound absorption block and method of constructing the same Aug. 11, 2009
7565951 Wall mountable acoustic assembly for indoor rooms Jul. 28, 2009
7562743 Acoustical window and door covering Jul. 21, 2009
7464790 Sound insulation/absorption structure, and structure having these applied thereto Dec. 16, 2008
7364221 Reduction of vibration transfer Apr. 29, 2008
7249654 Heat insulating acoustical structure and carbody shell structure using the same Jul. 31, 2007
7178630 Acoustic device for wall mounting for diffusion and absorption of sound Feb. 20, 2007
6877585 Acoustical ceiling tiles Apr. 12, 2005
6851515 Soundproofing panel, in particular structural or lining panel for a rotorcraft Feb. 8, 2005
6810683 Thermostatic expansion valve exit flow silencer device Nov. 2, 2004
6789646 Tunable sound absorbing and air filtering attenuating device Sep. 14, 2004
6772859 Embodiments of aperiodic tiling of a single asymmetric diffusive base shape Aug. 10, 2004
6617002 Microperforated polymeric film for sound absorption and sound absorber using same Sep. 9, 2003
6613424 Composite structure with foamed cementitious layer Sep. 2, 2003
6598358 Use of aerogels for deadening structure-borne and/or impact sounds Jul. 29, 2003
6581724 Sound absorbing closure panels for sound isolation modules Jun. 24, 2003
6491134 Air-coupled surface wave structures for sound field modification Dec. 10, 2002
6450289 Noise attenuation device Sep. 17, 2002
6446751 Apparatus and method for reducing noise levels Sep. 10, 2002
6443257 Acoustical panel having a calendered, flame-retardant paper backing and method of making the same Sep. 3, 2002
6431312 Motorized and computer operated variable acoustics treatment Aug. 13, 2002
6382351 Sound reducing panel for animal housing rooms May. 7, 2002
6371240 Anechoic chamber Apr. 16, 2002
6367581 Sound absorbing light fixture Apr. 9, 2002
6321871 Acoustic panels and the like Nov. 27, 2001
6305495 Surfacing panels for acoustical ceiling systems Oct. 23, 2001
6290022 Sound absorber for sound waves Sep. 18, 2001
6283247 Fabric retainer for acoustic structure and methods of installation Sep. 4, 2001
6209680 Acoustic diffuser panels and wall assembly comprised thereof Apr. 3, 2001
6202786 Absorber to absorb acoustic sound waves and method for its production Mar. 20, 2001

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