Featured patents

Exhaust System
US 08783414 B2, July 22, 2014, With sound absorbing material, Gerd Gaiser / Eberspächer Exhaust Technology GmbH & Co. KG (Neunkirchen, DE)
An internal combustion engine exhaust system component comprising…

Exhaust Valve Combined With Active Noise Control System
US 08857561 B2, Oct. 14, 2014, Valve controlled, James Egan et al. / Faurecia Emissions Control Technologies (Columbus, US)
A vehicle exhaust system comprising:…

Noise Barrier
US 08776945 B2, July 15, 2014, Sound absorbing fence or screen, Donald Robert Zimmerman
A noise barrier to provide noise insulation from roadway noise, construction…

Adjustable Device for Acoustic Modification
US 08573356 B1, Nov. 5, 2013, Sound absorbing panels, Joab Jay Perdue
An adjustable sound panel comprising:…

Seismic Source With Positive Reflection Plate and Method
US 08561754 B2, Oct. 22, 2013, Underwater, Yuan Ni / Cggveritas Services SA (Massy Cedex, FR)
A marine source sub-array for generating a pressure wave in a body of water…

Ultrasonic Attenuation Materials
US 08556030 B2, Oct. 15, 2013, Materials, Michael J. Zipparo et al. / W. L. Gore & Associates, Inc. (Newark, US)
Acoustic attenuation material comprising:…

Air Duct Assembly for Engine
US 08485311 B2, July 16, 2013, Carburetor, burner, or compressor intake silencer, Eric R. Tucker et al. / GM Global Technology Operations LLC (Detroit, US)
An air duct assembly for ducting air from an air cleaner housing to an engine…

Inflatable Sound Attenuation System
US 08469144 B2, June 25, 2013, Sound absorbing panels, James G. Pilaar
An inflatable sound attenuation panel, comprising:…

Radiated Sound Reducing Structure
US 08459408 B2, June 11, 2013, With exhaust pipe, Toshio Murata et al. / Toyota Jidosha Kabushiki Kaisha (Toyota, JP)
A radiated sound reducing structure that reduces radiated sound generated…

Front Resonator for a Speaker of a Wireless Device
US 08459403 B2, June 11, 2013, Diaphragm and Enclosure, Gunther Burghardt et al. / Research In Motion Limited (Waterloo, CA)
A front resonator for a speaker of a wireless device, comprising:…

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