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Class Information
Number: 181/290
Name: Acoustics > Sound-modifying means > Sound absorbing panels > Multilayer panel or wall structure
Description: Subject matter comprising more than one layer of sound attenuating material.










Sub-classes under this class:

Class Number Class Name Patents
181/291 With membrane outer layer 117
181/292 With perforated or porous face and honeycomb-like core 294


Patents under this class:
1 2 3 4 5 6 7 8 9 10 11 12

Patent Number Title Of Patent Date Issued
8701825 Mounting structure for dash silencer Apr. 22, 2014
8689934 Sound absorbing structure Apr. 8, 2014
8684134 Gypsum-panel acoustical monolithic ceiling Apr. 1, 2014
8684135 Sound barriers made from scrap and waste materials Apr. 1, 2014
8678133 Sound attenuating laminate materials Mar. 25, 2014
8662249 Multi-layered sound attenuation mechanism Mar. 4, 2014
8662246 Domestic appliance having at least one noise-deadening and/or sound-insulating coating and associated production method Mar. 4, 2014
8657066 Noise dampening energy efficient enclosure, bulkhead and boot material Feb. 25, 2014
8657067 Acoustic damping device for noise reduction Feb. 25, 2014
8640824 Acoustical vinyl flooring and methods of manufacture Feb. 4, 2014
8636105 Automotive insulating trim part Jan. 28, 2014
8636106 Automotive trim part for sound insulation and absorption Jan. 28, 2014
8631900 Sound insulation floor structure and sound insulation floor component as well as method for reducing floor impact sound Jan. 21, 2014
8631899 Sound absorber Jan. 21, 2014
8627922 Laminated acoustic soundproofing panel Jan. 14, 2014
8622169 Sound-insulating and vibration-isolating rubber pad and method for installing a sound-insulating and vibration-isolating floor using same Jan. 7, 2014
8590669 Sound attenuating device using an embedded layer for acoustical tuning Nov. 26, 2013
8579079 Soundproofing panel Nov. 12, 2013
8579080 Anti-noise panel Nov. 12, 2013
8573358 Multilayer sound absorbing structure comprising mesh layer Nov. 5, 2013
8573357 Acoustical door Nov. 5, 2013
8567558 Partition panel Oct. 29, 2013
8567557 Sound-muffling underlay tile systems Oct. 29, 2013
8556028 Acoustic module for enclosure panel Oct. 15, 2013
8556029 Noise and vibration mitigating mat Oct. 15, 2013
8544596 Enclosure for thermal equipment and method of construction Oct. 1, 2013
8544601 Sound-absorbing noise barrier Oct. 1, 2013
8511429 Ceiling panels made from corrugated cardboard Aug. 20, 2013
8496088 Acoustic composite Jul. 30, 2013
8485315 Acoustic energy reflector Jul. 16, 2013
8474572 Apparatus and method to attenuate vibration and acoustic noise Jul. 2, 2013
8474573 Reinforced composite sandwich panel 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
8470921 Ultra-low permeability polymeric encapsulated acoustic device and method Jun. 25, 2013
8464831 Noise attenuation panel and a gas turbine component comprising a noise attenuation panel Jun. 18, 2013
8464830 Soundproof material for vehicle Jun. 18, 2013
8453793 Accoustic fabrication system Jun. 4, 2013
8448744 Soundproofing device for the passenger compartment of a vehicle, in particular of an automobile May. 28, 2013
8443934 Acoustic resistance member and method for making the same May. 21, 2013
8443935 Sound absorbing body May. 21, 2013
8439161 Acoustically tunable sound absorption articles May. 14, 2013
8424251 Sound Proofing material with improved damping and structural integrity Apr. 23, 2013
8418806 Sound attenuating device using an embedded layer for acoustical tuning Apr. 16, 2013
8413762 Thermal-acoustic sections for an aircraft Apr. 9, 2013
8397864 Acoustical sound proofing material with improved fire resistance and methods for manufacturing same Mar. 19, 2013
8393438 Sound absorbing material, multilayer sound absorbing material, molded product of multilayer sound absorbing material, sound absorbing interior material, and sound absorbing floor covering mate Mar. 12, 2013
8387747 Soundproof panel and soundproof structure Mar. 5, 2013
8387746 Systems and methods for the reduction of underwater acoustical noise Mar. 5, 2013
8387748 Composite laminate for a thermal and acoustic insulation blanket Mar. 5, 2013
8371084 Suspended ceiling structure and layer-core-layer acoustic ceiling panel therefor Feb. 12, 2013

1 2 3 4 5 6 7 8 9 10 11 12










 
 
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