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Class Information
Number: 181/296
Name: Acoustics > Sound-modifying means > Methods
Description: Subject matter comprising methods of attenuating sound.










Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
8689935 Abating low-frequency noise using encapsulated gas bubbles Apr. 8, 2014
8671948 Corded earplugs Mar. 18, 2014
8616328 Method and apparatus for wave generation and detection using tensegrity structures Dec. 31, 2013
8607929 Acoustically tunable sound absorption articles and methods of making same Dec. 17, 2013
8584793 Device for reducing booming noise in a motor vehicle Nov. 19, 2013
8496088 Acoustic composite Jul. 30, 2013
8479880 Multifunctional nano-skin articles and methods Jul. 9, 2013
8470921 Ultra-low permeability polymeric encapsulated acoustic device and method Jun. 25, 2013
8443932 Working machine May. 21, 2013
8403108 Acoustically tunable sound absorption articles and methods of making same Mar. 26, 2013
8381872 Acoustic composite Feb. 26, 2013
8367184 Structured films having acoustical absorbance properties Feb. 5, 2013
8327977 Floor covering Dec. 11, 2012
8316985 Methods and devices for sound abatement of an abdominal stoma Nov. 27, 2012
8270627 Adaptive noise control system Sep. 18, 2012
8270628 Method and system for actively influencing noise, and use thereof in a motor vehicle Sep. 18, 2012
8215446 Sound field controller Jul. 10, 2012
8196704 Linear acoustic liner Jun. 12, 2012
8184820 Indirect acoustic transfer control of noise May. 22, 2012
8144889 Noise control system using smart materials Mar. 27, 2012
8132644 Method and apparatus for the reduction of sound Mar. 13, 2012
8083027 Method for manufacturing a sandwich panel Dec. 27, 2011
8005235 Multi-chamber noise control system Aug. 23, 2011
7954596 Acoustically and thermally acting insulation Jun. 7, 2011
7946385 Process for the production of an acoustically resistive structure, the acoustically resistive structure thus obtained, and coating using such a structure May. 24, 2011
7919174 Tailored core laminated sheet metal Apr. 5, 2011
7784165 Method of forming a panel constrained layer damper treatment Aug. 31, 2010
7635402 Air filter status evaluator Dec. 22, 2009
7540354 Micro-perforated acoustic liner Jun. 2, 2009
7503430 Reduced dust acoustic panel Mar. 17, 2009
7464791 Acoustic mats and methods for making the same Dec. 16, 2008
7431128 Noise absorbing structure of instrument panel Oct. 7, 2008
7410030 Soundproofing material for vehicle Aug. 12, 2008
7364015 Acoustical panel comprising interlocking matrix of set gypsum and method for making same Apr. 29, 2008
7303048 Method for filtering ultrasonic noise within a fluid flow system Dec. 4, 2007
7253218 Sound damping compositions and methods for applying and baking same onto substrates Aug. 7, 2007
7248703 Systems and methods for adaptive noise cancellation Jul. 24, 2007
7137477 Sound absorbers Nov. 21, 2006
7063183 Apparatus and methods of forming sound attenuating laminates having fiber and mass layers Jun. 20, 2006
7000729 Five-layer sound absorbing pad: improved acoustical absorber Feb. 21, 2006
6971475 Vehicle trim components with selectively applied foam and methods of making same Dec. 6, 2005
6966594 Vehicle trim panel and method of reducing BSR Nov. 22, 2005
6966402 Acoustical heat shield Nov. 22, 2005
6893711 Acoustical insulation material containing fine thermoplastic fibers May. 17, 2005
6824591 Air filter for an internal combustion engine Nov. 30, 2004
6820923 Sound absorption system for automotive vehicles Nov. 23, 2004
6648100 Method of tuning acoustical absorption in a vehicle interior Nov. 18, 2003
6615857 Modular flow control actuator Sep. 9, 2003
6567341 Boom system and its use to attenuate underwater sound or shock wave transmission May. 20, 2003
6371242 Noise attenuation panel Apr. 16, 2002

1 2 3 4










 
 
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