ALEXANDRIA, Va., July 30 -- United States Patent no. 12,370,696, issued on July 29, was assigned to Hoowaki LLC (Greenville, S.C.).
"Gripping surface for manufactured articles" was invented by Ralph Hulseman (Greenville, S.C.) and Cameron McPherson (Easley, S.C.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A gripping surface for a manufactured article comprising: a first pillar cluster disposed on a substate and having: a first pillar, having a first apex vector and a first draft angle defined by a first side of the first pillar and s substrate; a second draft angle defined by a second side of the first pillar and the substrate wherein the second draft angle is less than the first draft angle; and, a secon...