ALEXANDRIA, Va., Oct. 8 -- United States Patent no. 12,434,458, issued on Oct. 7, was assigned to GUANG XIN POLYMER COMPOSITES Co. LTD. (Nantou County, Taiwan).
"Polypropylene-based outsole material, footwear sole structure including the same, and footwear article including the footwear sole structure" was invented by Hung-Chia Yen (Taichung, Taiwan) and Pei-Neng Hsu (Changhua, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A polypropylene-based outsole material, which includes, based on 100 wt % of the polypropylene-based outsole material, a polypropylene homopolymer present in an amount ranging from 5 wt % to 25 wt %, a thermoplastic polypropylene copolymer present in an amount ranging from 70 wt % ...