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Class Information
Number: 181/284
Name: Acoustics > Sound-modifying means > Sound absorbing panels
Description: Subject matter comprising planar-type structure for attenuating acoustic waves.










Sub-classes under this class:

Class Number Class Name Patents
181/288 Cellular 169
181/289 Light permeable 33
181/285 Load bearing block type structure 64
181/294 Materials 372
181/287 Movable/foldable panels 92
181/290 Multilayer panel or wall structure 593
181/286 Specific acoustical properties or dimensions 432
181/293 With channels or cavities in surface layer 185


Patents under this class:
1 2 3 4 5 6

Patent Number Title Of Patent Date Issued
8701825 Mounting structure for dash silencer Apr. 22, 2014
8689934 Sound absorbing structure Apr. 8, 2014
8689936 Acoustic absorber having conical inserts Apr. 8, 2014
8684135 Sound barriers made from scrap and waste materials Apr. 1, 2014
8662245 Frequency response treatment of wood paneling Mar. 4, 2014
8662249 Multi-layered sound attenuation mechanism Mar. 4, 2014
8657067 Acoustic damping device for noise reduction Feb. 25, 2014
8640823 Device for reducing aerodynamic noise from an aircraft undercarriage Feb. 4, 2014
8640824 Acoustical vinyl flooring and methods of manufacture Feb. 4, 2014
8631900 Sound insulation floor structure and sound insulation floor component as well as method for reducing floor impact sound Jan. 21, 2014
8627922 Laminated acoustic soundproofing panel Jan. 14, 2014
8616331 Panel assembly for traffic noise barrier wall Dec. 31, 2013
8607921 Hearing protection process and device Dec. 17, 2013
8590669 Sound attenuating device using an embedded layer for acoustical tuning Nov. 26, 2013
8579078 Acoustic panel for a turbojet engine nacelle, with in-built fasteners Nov. 12, 2013
8573356 Adjustable device for acoustic modification Nov. 5, 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
8556030 Ultrasonic attenuation materials Oct. 15, 2013
8550206 Method and structure for achieving spectrum-tunable and uniform attenuation Oct. 8, 2013
8544218 Acoustically insulating product Oct. 1, 2013
8534419 Composite sound absorber Sep. 17, 2013
8534418 Plate absorber Sep. 17, 2013
8474573 Reinforced composite sandwich panel Jul. 2, 2013
8469144 Inflatable sound attenuation system Jun. 25, 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
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
8439160 Acoustic suppression systems and related methods May. 14, 2013
8434591 Acoustic barrier May. 7, 2013
8425710 Automated placement of vibration damping materials Apr. 23, 2013
8418806 Sound attenuating device using an embedded layer for acoustical tuning Apr. 16, 2013
8418807 Noise abatement wall and a noise abatement wall system Apr. 16, 2013
8387748 Composite laminate for a thermal and acoustic insulation blanket Mar. 5, 2013
8387747 Soundproof panel and soundproof structure Mar. 5, 2013
8371419 Hybrid sound absorbing sheet Feb. 12, 2013
8367184 Structured films having acoustical absorbance properties Feb. 5, 2013
8365862 Sound absorption material and method of manufacturing sound absorption material Feb. 5, 2013
8360201 Sound absorbing structure and sound chamber Jan. 29, 2013
8347575 Lightweight acoustical flooring underlayment Jan. 8, 2013
8337976 Abuse-resistant cast acoustical ceiling tile having an excellent sound absorption value Dec. 25, 2012
8327977 Floor covering Dec. 11, 2012
8316986 Sound attenuation canopy Nov. 27, 2012
8276710 Method for producing a lightweight, sound insulating covering for motor vehicles and corresponding covering Oct. 2, 2012
8251175 Corrugated acoustical panel Aug. 28, 2012
8245815 Cellular-core structure for an acoustic panel Aug. 21, 2012
8230969 Acoustic panels, apparatus and assemblies with airflow-resistive layers attached to sound incident surfaces Jul. 31, 2012
8223977 Sound receiver Jul. 17, 2012
8215451 Impact and sound absorbing material and sound absorbing structure Jul. 10, 2012

1 2 3 4 5 6










 
 
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