ALEXANDRIA, Va., June 10 -- United States Patent no. 12,291,871, issued on May 6.
"Injection-molded roof panel with improvements" was invented by Feng Ouyang (Mississauga, Canada).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure provides a new design for an injection molded roof panel with multiple improvements. The panel is made from PVC-like materials via injection molding with a large standard size. It comprises laterally and longitudinally sloped watercourses and arches. A tongue at the front connects to a vertically adjacent panel's rear upper interlocking member. Interlocks at the lateral ends of the panel connect one panel to another horizontally adjacent panel. Condensed water rid...