ALEXANDRIA, Va., Oct. 6 -- United States Patent no. 12,752,575, issued on Oct. 6, was assigned to SUMITOMO RUBBER INDUSTRIES LTD. (Hyogo, Japan).
"Tire" was invented by Shuichiro Ono (Hyogo, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A tire including a tread portion, the tread portion having at least one main groove continuously extending in the tire circumferential direction, the tread portion including a rubber having a hardness at 60deg C. of 58 or higher and a hardness at 0deg C. of not more than 115% of the hardness at 60deg C., the tread portion having a S50/S0 ratio of more than 1, wherein S0 denotes the sea proportion (%) in the tread ground contact surface of the new tire, and S50 denotes ...