ALEXANDRIA, Va., Aug. 5 -- United States Patent no. 12,696,954, issued on Aug. 4, was assigned to Acushnet Co. (Fairhaven, Mass.).

"Article of footwear with midsole having variable stiffness" was invented by John F. Swigart (Plymouth, Mass.) and Robert S. Bento (Raynham, Mass.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An article of footwear comprising an upper and a sole assembly connected to the upper. The sole assembly may comprise a midsole with a variable stiffness that provides different stiffness gradients in different regions of the sole assembly. The midsole may comprise a core piece and a perimeter piece surrounding the core piece. The perimeter piece may include a recess for receiving the core...