Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
May 17, 2011
Patent Application Number
12728779
Date Filed
March 22, 2010
Patent Primary Examiner
Patent abstract
A method of removing metallic copper from a steel surface defining a bore or cylinder of a gun is provided. The method involves contacting the surface with a composition comprising a polyphosphonic acid, a hydroxyl-substituted primary amine, and water.
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