Featured patents

Exhaust Muffler Provided With Tail Pipe
US 08833513 B2, Sept. 16, 2014, With exhaust pipe, Noboru Matsumoto / Matsushou Co., Ltd. (Yashio-shi, Saitama, JP)
An exhaust muffler including a tail pipe comprising:…

Acoustic Metamaterial With Simultaneously Negative Effective Mass Density and Bulk Modulus
US 08857564 B2, Oct. 14, 2014, Specific acoustical properties or dimensions, Min Yang et al. / The Hong Kong University of Science and Technology (Hong Kong, CN)
A device with simultaneous negative effective mass density and bulk modulus,…

Vectorized Jet Fan
US 08863896 B1, Oct. 21, 2014, Sound absorbing ventilating duct or curb, Kai Kang
A vectorized jet fan device, comprising:…

Acoustic Panel and Method of Forming
US 08763753 B2, July 1, 2014, With perforated or porous face and honeycomb-like core, Nicholas Joseph Kray et al. / General Electric Company (Schenectady, US)
An acoustic panel, comprising:…

Ear Protector With a Sound Damping Filter, Sound Damping Filter for Such an Ear Protector as Well as Method for Manufacturing a Sound Damping Filter for Such an Ear Protector
US 08689931 B2, April 8, 2014, Ear insert, Engbert Wilmink / Dynamic Ear Company B.V. NL
Ear protector with a sound damping filter, comprising a membrane composed…

Baffle Arrangement for a Genset Enclosure
US 08672089 B2, March 18, 2014, Electical type devices, Alan McKee et al. / Caterpillar (NI) Limited (Larne, GB
A baffle arrangement for a genset enclosure comprising:…

Frequency Response Treatment of Wood Paneling
US 08662245 B1, March 4, 2014, Housing or enclosure, Daniel P. Hess et al. / University of South Florida (Tampa, US)
A method of modifying the frequency response of an acoustical structure,…

Soundproofing Panel
US 08579079 B2, Nov. 12, 2013, Multilayer panel or wall structure, David Maupetit et al. / Hutchinson (Paris, FR)
An acoustic insulation panel comprising two rigid facing panels having…

Ceiling Speaker Assembly
US 08479871 B2, July 9, 2013, With horn, Michael Hudson et al. / RGB Systems, Inc. (Anaheim, US)
A ceiling speaker assembly comprising:…

Fan Coil Ceiling Unit With Closely Coupled Silencers
US 08453790 B1, June 4, 2013, Sound absorbing ventilating duct or curb, Bogna Gryc et al. / E.H. Price Ltd. (Winnipeg, Manitoba, CA)
A fan coil ceiling unit for drawing air from an occupied space, conditioning…

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