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Houghton Patents New Aluminum Etching Technology

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Houghton International, Inc.
945 Madison Ave.
Norristown, PA, 19403

Press release date: September 27, 2013

NORRISTOWN, Pa. — Houghton International Inc. and Houghton Technical Corp. today announce that the United States Patent and Trademark Office has issued U.S. Patent No. 8,518,286, entitled "Methods and Compositions for Acid Treatment of a Metal Surface".  This patent is directed towards Houghton's technology for aluminum acid etching, which is formulated to provide a uniform fine matte satin finish on aluminum and aluminum alloys prior to anodizing and/or coloring.

Unlike alkaline etching, this technology produces a superior matte finish while significantly reducing aluminum removal and sludge waste. It is performed at lower temperatures and requires less processing time compared to conventional caustic etch systems.

U.S. Patent No. 8,518,286 adds to Houghton International's acid etching patent portfolio, which also includes U.S. Patent No. 8,252,195 and other pending applications. For more information about the full line of Houghto-Etch™ products, click on or call 610-666-0174 or toll free in the U.S. 888-459-9844.

Houghton Metal Finishing (HMF) is a division of Houghton International that specializes in complete proprietary chemical products to the aluminum finishing and anodizing industries.

About Houghton International Inc.
Since 1865, Houghton International Inc. has been serving the metalworking, automotive, and steel industries, along with a variety of other markets including the offshore oil exploration and production industry, with the development and production of specialty chemicals, oils and lubricants. Headquartered in Valley Forge, Pa., Houghton maintains manufacturing and research facilities throughout the world. Houghton International continues its focus to expand its customer service operations and grow its worldwide facilities. Visit

Houghton International, Inc.  
Madison & Van Buren Aves.   
P.O. Box 930   
Valley Forge, PA  19482-0930  

Houghton Metal Finishing
1055 Windward Ridge Parkway
Suite 140
Alpharetta, GA 30005

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