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Class Information
Number: 181/291
Name: Acoustics > Sound-modifying means > Sound absorbing panels > Multilayer panel or wall structure > With membrane outer layer
Description: Subject matter having a front or rear facing formed as a coating, foil, or film.

Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8684134 Gypsum-panel acoustical monolithic ceiling Apr. 1, 2014
8590670 Sound proof membrane Nov. 26, 2013
8573358 Multilayer sound absorbing structure comprising mesh layer Nov. 5, 2013
8469145 Multilayer sound absorbing sheet Jun. 25, 2013
8360201 Sound absorbing structure and sound chamber Jan. 29, 2013
8337976 Abuse-resistant cast acoustical ceiling tile having an excellent sound absorption value Dec. 25, 2012
8327976 Insulation design for thermal and acoustic insulation of an aircraft Dec. 11, 2012
7837007 Sound-absorbing element for transport means, in particular for aircraft Nov. 23, 2010
7814728 Flooring material, methods for producing and laying same Oct. 19, 2010
7757811 Multilayer articles having acoustical absorbance properties and methods of making and using the same Jul. 20, 2010
7704603 Aqueous solution of phenolic compound-formaldehyde-aminoalcohol resin, preparation method, mineral fiber sizing compositions containing said resin and resulting products Apr. 27, 2010
7690158 Sight and sound barrier Apr. 6, 2010
7686132 Porous membrane Mar. 30, 2010
7670671 Dust, water and sound barrier including a witness line for ease of application to a vehicle door Mar. 2, 2010
7591346 Sound absorptive multilayer composite Sep. 22, 2009
7578468 Acoustic absorption system for an aircraft airframe Aug. 25, 2009
7510052 Acoustic septum cap honeycomb Mar. 31, 2009
7484592 Sound attenuation panel comprising a resistive layer with reinforced structural component Feb. 3, 2009
7364014 Sound absorbing body, sound absorbing structural body, and method of manufacturing these bodies Apr. 29, 2008
7320739 Sound absorptive multilayer composite Jan. 22, 2008
7063184 Sound reducing panel Jun. 20, 2006
7033963 Acoustical panel coating and process of applying same Apr. 25, 2006
7000729 Five-layer sound absorbing pad: improved acoustical absorber Feb. 21, 2006
6868940 Sound absorbing panel Mar. 22, 2005
6840349 Multi-component acoustically resistive layer for acoustical attenuation panel and panel thus obtained Jan. 11, 2005
6789645 Sound-insulating sandwich element Sep. 14, 2004
6713150 Acoustically effective rear parcel shelf Mar. 30, 2004
6698543 Acoustical wall panels Mar. 2, 2004
6681890 Sound barrier layer for insulated heat shield Jan. 27, 2004
6659223 Sound attenuating material for use within vehicles and methods of making same Dec. 9, 2003
6615950 Sandwich acoustic panel Sep. 9, 2003
6607625 Process for the production of an acoustively resistive layer, resistive layer thus obtained, and wall using such layer Aug. 19, 2003
6604603 Soundproofing for insulating sound producing devices or parts of systems, especially devices that transmit vibrations such as vibrators Aug. 12, 2003
6569509 Ultralight, sound and shock absorbing component set May. 27, 2003
6536556 Noise reduction sandwich panel, notably for aircraft turbojet engine Mar. 25, 2003
6446751 Apparatus and method for reducing noise levels Sep. 10, 2002
6412597 Plate suitable as a noise protection wall Jul. 2, 2002
6382350 Molded acoustic and decorative mats and methods for forming the same May. 7, 2002
6158176 Core for a sound absorbing panel Dec. 12, 2000
6077613 Sound insulating membrane Jun. 20, 2000
5975453 Sound-absorbing material and a cable reel including the same Nov. 2, 1999
5824973 Method of making sound absorbing laminates and laminates having maximized sound absorbing characteristics Oct. 20, 1998
5776579 Structural bonding with encapsulated foaming adhesive Jul. 7, 1998
5681072 Sound absorber for motor vehicles Oct. 28, 1997
5667867 Composite sheet comprising a cellular core and at least one outer layer Sep. 16, 1997
5665447 Sound screen insulation with asphalt septum Sep. 9, 1997
5644872 Sound absorbing panel Jul. 8, 1997
5633067 Engine compartment casing element with perforated foam layer May. 27, 1997
5584950 Sound insulating membrane Dec. 17, 1996
5567922 Sound insulating vehicle body part Oct. 22, 1996

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