The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 13, 2014
Filed:
Sep. 21, 2010
Applicants:
Ming Liang Shiao, Collegeville, PA (US);
Tihana Fuss, Derry, NH (US);
Husnu M. Kalkanoglu, Swarthmore, PA (US);
Walter T. Stephens, Cleveland, OH (US);
Inventors:
Ming Liang Shiao, Collegeville, PA (US);
Tihana Fuss, Derry, NH (US);
Husnu M. Kalkanoglu, Swarthmore, PA (US);
Walter T. Stephens, Cleveland, OH (US);
Assignee:
CertainTeed Corporation, Valley Forge, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B05D 1/12 (2006.01);
U.S. Cl.
CPC ...
Abstract
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.