ALEXANDRIA, Va., Feb. 11 -- United States Patent no. 12,546,116, issued on Feb. 10, was assigned to Gorilla Treads LLC (Heber City, Utah).
"Composite stair tread" was invented by Christopher Bowman (Draper, Utah), Corey Keller (Lehi, Utah) and Preston Ray Ward (Centerville, Utah).
According to the abstract* released by the U.S. Patent & Trademark Office: "A stair. The stair tread comprises a composite material. The composite material is formed into a grid of ribs and a top side coupled to the grid of ribs. The top side comprises a gutter slope design comprising sloped grooves, where the depth of the grooves at a first end is deeper than the depth of the grooves at a second end, with a gradual slope from the first end to the second end."
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