Patents

method for

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By: KERRY PIANOFORTE

Editor, Coatings World

method for
coloring concrete
Patent No. U.S. 6,596,072 B1
Hamburger Color Company, King of Prussia, PA, has received a patent for a pigment-containing granule for use in coloring cement consisting essentially of at least one pigment selected from the group consisting of manganese oxide and iron oxide and an agglomerator comprised of a hydrophilic clay.

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