US Patent Issued to The Yokohama Rubber on Oct. 27 for "Pneumatic tire" (Japanese Inventors)

ALEXANDRIA, Va., Oct. 27 -- United States Patent no. 12,773,881, issued on Oct. 27, was assigned to The Yokohama Rubber Co. LTD. (Tokyo).

"Pneumatic tire" was invented by Kazunori Shimizu (Kanagawa, Japan) and Hiroshi Hata (Kanagawa, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "In this pneumatic tire, a tan Delta value T20 of a rubber member, which constitutes at least one of a bead filler, an undertread, a sidewall rubber, and a rim cushion rubber, at 20deg C. and a tan Delta value T60 of the rubber member at 60deg C. satisfy 0.50less than equal toT20/T60less than equal to2.00 and T20less than equal to0.22. Additionally, the tan Delta value T20 of the rubber member at 20deg C. is in a range T20less ...