Roofing granules with a decorative metallic appearance
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United States of America Patent
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Apr 15, 2003
Grant Date -
Dec 12, 2002
app pub date -
May 10, 2001
filing date -
May 10, 2001
priority date (Note) -
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Abstract
Colored roofing granules and methods for their preparations, having decorative metallic appearance and enhanced stability against discoloration of color containing a silica-encapsulated metallic flake or colored lamellar effect pigment distributed in an insolubilized alkali silicate coating.
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Cited Art Landscape
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