Solar heat-reflective roofing granules, solar heat-reflective shingles and process for producing the same

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United States of America Patent

PATENT NO 11053684
APP PUB NO 20190249434A1
SERIAL NO

16394963

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A process for preparing roofing granules includes forming kaolin clay into green granules and sintering the green granules at a temperature of at least 900 degrees Celsius to cure the green granules until the crystalline content of the sintered granules is at least ten percent as determined by x-ray diffraction.

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Patent Owner(s)

Patent OwnerAddress
CERTAINTEED CORPORATION750 EAST SWEDESFORD ROAD P O BOX 860 VALLEY FORGE PA 19482

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kalkanoglu, Husnu M Swarthmore, US 195 6626
Shiao, Ming Liang Collegeville, US 97 2318
Stephens, Walter T Cleveland, US 30 224
Tresler, Tihana Derry, US 2 1

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