ALEXANDRIA, Va., Oct. 8 -- United States Patent no. 12,438,495, issued on Oct. 7, was assigned to GAF Energy LLC (Parsippany, N.J.).
"Roofing system for prevention of roofing shingle deformation" was invented by Thierry Nguyen (San Francisco), Ming-Liang Shiao (Collegeville, Pa.), Dan Hua (San Jose, Calif.) and Matthew Grigsby (San Francisco).
According to the abstract* released by the U.S. Patent & Trademark Office: "A system includes a plurality of photovoltaic shingles and a plurality of roofing shingles installed on a roof deck. Each of the roofing shingles includes a headlap portion and a nail zone on the headlap portion. The nail zone includes at least one nail receiving portion, and at least one opening defining a perimeter of at l...