ALEXANDRIA, Va., Dec. 9 -- United States Patent no. 12,492,556, issued on Dec. 9, was assigned to CERTAINTEED LLC (Malvern, Pa.).
"Roofing shingles, tiles and shakes" was invented by Choung-Houng Lai (Acton, Mass.), Mithun N. Kamath (Shrewsbury, Mass.), Jia Liu (Northborough, Mass.), Liyan Ma (King of Prussia, Pa.) and Gregory F. Jacobs (Oreland, Pa.).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure relates generally to roofing elements and methods for making them. In one embodiment, the disclosure provides a roofing element in the form of a roofing shingle that includes a body of a foamed cured cross-linked polymer, the body having a top surface and a bottom surface, the body extending s...