Proprietary Bitumen Roofing Application Provides 70% Sun Reflection KATY, Texas: U.S. Silica Holdings, Inc. (NYSE: SLCA) announced today that the United States Patent and Trademark Office has issued US Patent 10253493, entitled “Particulates having high total solar reflectance.” The patent covers solar reflective particulate composition used for U.S. Silica’s White Armor® Cool Roof Granules. White Armor […]