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:…

Exhaust Muffler
US 08820475 B2, Sept. 2, 2014, And side branch chamber, Rajdeep Pradhan / Caterpillar Inc. (Peoria, US)
An exhaust muffler for an internal combustion engine comprising:…

Gas-Guiding Pipe Comprising a Noise-Attenuating Covering With Variable Porosity
US 08701822 B2, April 22, 2014, Sound absorbing ventilating duct or curb, Eric Jean-Louis Bouty et al. / Turbomeca (Bordes, FR)
A duct for guiding gas along a gas path, comprising:…

Firearm Noise Suppressor System
US 08714301 B2, May 6, 2014, Silencer for firearms, Jonathon Shults / Silencerco, LLC (West Valley City, US)
A noise suppressor system for a firearm, comprising: a flash suppressor…

Speaker Device
US 08708092 B2, April 29, 2014, Reflex baffle, Arata Tada et al. / Alpine Electronics, Inc. (Tokyo, JP)
A speaker device comprising:…

Automotive Insulating Trim Part
US 08636105 B2, Jan. 28, 2014, Multilayer panel or wall structure, Claudio Castagnetti et al. / Autoneum Management AG (Winterhur, CH)
A sound insulating part for a vehicle, comprising:…

Exhaust Gas Treatment Device
US 08646573 B2, Feb. 11, 2014, Multi-passage, Marcus Werni et al. / J. Eberspaecher GmbH & Co. KG (Esslingen, DE)
An exhaust gas treatment device for an exhaust system of an internal combustion…

Method and Structure for Achieving Spectrum-Tunable and Uniform Attenuation
US 08550206 B2, Oct. 8, 2013, Ear insert, John G. Casali et al. / Virginia Tech Intellectual Properties, Inc. (Blacksburg, US)
An earplug comprising:…

Firearm Sound Suppressor With Flanged Back End
US 08453789 B1, June 4, 2013, Silencer for firearms, Barry W. Dueck et al. / SureFire, LLC (Fountain Valley, US)
A firearm sound suppressor comprising:…

Sound Attenuation Systems and Methods
US 08459407 B2, June 11, 2013, Sound absorbing ventilating duct or curb, Ranjit Kumar Jangili / General Electric Company (Schenectady, US)
A system, comprising:…

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