ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,420,505, issued on Sept. 23, was assigned to The Yokohama Rubber Co. LTD. (Tokyo).
"Method of manufacturing pneumatic tire" was invented by Daisuke Watanabe (Kanagawa, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "In a method of manufacturing a pneumatic tire, vulcanization is performed using a mold having a side plate for forming a sidewall portion of the pneumatic tire and a sector for forming a tread portion of the pneumatic tire, and in which chamfered portions are formed respectively at edge portions of the side plate and the sector abutted against each other, to form a ridge extending along the chamfered portions in a tire circumferential ...