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Class Information
Number: 181/292
Name: Acoustics > Sound-modifying means > Sound absorbing panels > Multilayer panel or wall structure > With perforated or porous face and honeycomb-like core
Description: Subject matter having at least one porous or perforated layer and at least one honeycomb-like layer.










Patents under this class:
1 2 3 4 5 6

Patent Number Title Of Patent Date Issued
8689934 Sound absorbing structure Apr. 8, 2014
8689936 Acoustic absorber having conical inserts Apr. 8, 2014
8662249 Multi-layered sound attenuation mechanism Mar. 4, 2014
8657067 Acoustic damping device for noise reduction Feb. 25, 2014
8651233 Acoustic structure with increased bandwidth suppression Feb. 18, 2014
8646574 Acoustic skin for an aircraft nacelle acoustic panel Feb. 11, 2014
8640825 Acoustic panel for an ejector nozzle Feb. 4, 2014
8642158 Repair of composite sandwich structures Feb. 4, 2014
8636107 Method for repairing at least a portion of an acoustic panel Jan. 28, 2014
8607924 Anchoring of septums in acoustic honeycomb Dec. 17, 2013
8596413 Acoustic array of polymer material Dec. 3, 2013
8579225 Device for acoustic treatment of the noise emitted by a turbojet Nov. 12, 2013
8579079 Soundproofing panel Nov. 12, 2013
8567558 Partition panel Oct. 29, 2013
8544531 Surface cooler with noise reduction Oct. 1, 2013
8544596 Enclosure for thermal equipment and method of construction Oct. 1, 2013
8534418 Plate absorber Sep. 17, 2013
8499887 Acoustically optimized cabin wall element Aug. 6, 2013
8479880 Multifunctional nano-skin articles and methods Jul. 9, 2013
8474574 Sound absorbing structure Jul. 2, 2013
8469146 Panel for acoustic treatment comprising a junction between two parts and process for the reparation of a panel for acoustic treatment Jun. 25, 2013
8464831 Noise attenuation panel and a gas turbine component comprising a noise attenuation panel Jun. 18, 2013
8453793 Accoustic fabrication system Jun. 4, 2013
8434591 Acoustic barrier May. 7, 2013
8413761 Acoustic honeycomb with perforated septum caps Apr. 9, 2013
8413762 Thermal-acoustic sections for an aircraft Apr. 9, 2013
8397865 System and method for noise suppression Mar. 19, 2013
8360201 Sound absorbing structure and sound chamber Jan. 29, 2013
8336804 Aircraft cabin panel with core recesses for acoustic absorption Dec. 25, 2012
8302733 Acoustic absorber for aircraft engines Nov. 6, 2012
8294059 Process for producing through-holes in sheet members Oct. 23, 2012
8292214 Vibration damping for wing-to-body aircraft fairing Oct. 23, 2012
8251174 Method for bonding honeycomb cores Aug. 28, 2012
8251175 Corrugated acoustical panel Aug. 28, 2012
8245815 Cellular-core structure for an acoustic panel Aug. 21, 2012
8235171 System and method for noise suppression Aug. 7, 2012
8230969 Acoustic panels, apparatus and assemblies with airflow-resistive layers attached to sound incident surfaces Jul. 31, 2012
8220588 Unitized engine nacelle structure Jul. 17, 2012
8210310 Tunable acoustical plaster system and method of making it Jul. 3, 2012
8196704 Linear acoustic liner Jun. 12, 2012
8181738 Acoustical sound proofing material with improved damping at select frequencies and methods for manufacturing same May. 22, 2012
8127889 Noise reduction system for structures Mar. 6, 2012
8118136 Laminated perforated acoustical foam Feb. 21, 2012
8100226 Porous nonwoven scrims in acoustical panels Jan. 24, 2012
8083027 Method for manufacturing a sandwich panel Dec. 27, 2011
8083024 Lightweight speaker enclosure Dec. 27, 2011
8079443 Aircraft trim panel with integrated adjustable acoustic properties Dec. 20, 2011
8074765 Sound absorbing structure of electronic equipment Dec. 13, 2011
8066098 Acoustic septum cap honeycomb Nov. 29, 2011
8047329 System and method for noise suppression Nov. 1, 2011

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