ALEXANDRIA, Va., Jan. 28 -- United States Patent no. 12,533,912, issued on Jan. 27, was assigned to The Yokohama Rubber Co. LTD. (Tokyo).
"Tire" was invented by Yoshifumi Koishikawa (Kanagawa, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A pneumatic tire includes a circumferential main groove extending in a tire circumferential direction, a land portion defined by the circumferential main grooves, and a sipe disposed in the land portion. The sipe is formed in a zigzag shape that has an amplitude in a width direction of the sipe while extending in a longitudinal direction of the sipe. A magnitude of the amplitude changes according to a position in a depth direction of the sipe. A depth of a maximum am...