ALEXANDRIA, Va., June 16 -- United States Patent no. 12,304,246, issued on May 20, was assigned to SUMITOMO RUBBER INDUSTRIES LTD. (Kobe, Japan).
"Motorcycle tire" was invented by Shohei Shibamoto (Kobe, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A motorcycle tire includes a tread portion between a pair of tread edges. The tread portion includes a tread rubber forming a tread surface. The tread rubber includes a first rubber layer comprising a first rubber and forming the tread surface, and a second rubber layer comprising a second rubber and being adjacent inwardly in a tire radial direction of the first rubber layer. A loss tangent tan Deltaa of the first rubber at 100 degrees C. is smaller than ...