Featured patents

Two-Stroke Engine Comprising a Muffler
US 08844672 B2, Sept. 30, 2014, With expansion chamber, Christian Kellermann / Makita Corporation (Aichi, JP)
A two-stroke engine of an engine-operated tool having a muffler, wherein…

US 08820471 B2, Sept. 2, 2014, Sound-Modifying Means, Koji Okazaki et al. / Yamaha Corporation (Hamamatsu-shi, JP)
A speaker, comprising:…

Assembly Wall Body Having Improved Sound Absorbing and Screening Performance and a Assembly Structure Comprising the Same
US 08820476 B2, Sept. 2, 2014, Multilayer panel or wall structure, Jin-Woo Nam et al. / LG Hausys, Ltd. (Seoul, KR)
An assembly wall having improved sound absorption/insulation performance,…

US 08770342 B2, July 8, 2014, Casings, Georg Wirth / Eberspächer Exhaust Technology GmbH & Co. KG (Neunkirchen, DE)
A muffler for an exhaust system of an internal combustion engine, the muffler…

Acoustic Panel
US 08708097 B2, April 29, 2014, With membrane outer layer, Mark Borroni / Bellmax Acoustic Pty Ltd. (Surrey Hills, AU)
A panel including an air impermeable membrane layer and a layer having apertures…

Dual Muffler
US 08684131 B1, April 1, 2014, With exhaust pipe, Ki Chul Park et al. / Kia Motors Corporation (Seoul, KR)
A dual muffler comprising:…

Method for the Production of an Otoplastic Device
US 08636100 B2, Jan. 28, 2014, Ear insert, Beat Bleuer
An earmold made of plastic, wherein the earmold is a custom-fit earpiece and is…

Sound Absorber
US 08631899 B2, Jan. 21, 2014, Specific acoustical properties or dimensions, Frank Zickmantel / Silenceresearch GmbH (Cologne, DE)
A sound absorber having porous material for muffling sound, comprising:…

Composite Flame Barrier Laminate for a Thermal and Acoustic Insulation Blanket
US 08607927 B2, Dec. 17, 2013, Materials, Dariusz Wlodzimierz Kawka et al. / E I du Pont de Nemours and Company (Wilmington, US)
A multilayer laminate for use as a flame barrier comprising…

Multifunctional Nano-Skin Articles and Methods
US 08479880 B2, July 9, 2013, Methods, Gopal P. Mathur / The Boeing Company (Chicago, US)
A method comprising:…

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