ALEXANDRIA, Va., Dec. 2 -- United States Patent no. 12,485,705, issued on Dec. 2, was assigned to The Yokohama Rubber Co. LTD. (Tokyo).
"Pneumatic tire" was invented by Masaaki Nagayasu (Kanagawa, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "In a pneumatic tire, a tread portion including rows of land portions defined by circumferential grooves extending in a tire circumferential direction is formed by sectors divided in the tire circumferential direction, sipes extending in a tire width direction formed in the land portions include a three-dimensional sipe, whose shape tread surface changes along a sipe depth direction, and a two-dimensional sipe, whose shape is constant along the sipe depth directio...