ALEXANDRIA, Va., Sept. 3 -- United States Patent no. 12,402,684, issued on Sept. 2, was assigned to Qinglin Lai (Jinjiang, China).
"Flat arch correction training shoe" was invented by Qinglin Lai (Jinjiang, China) and Xingwu Lan (Wuping County, Fujian Province, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "The invention pertains to a foot arch correction training shoe with a uniquely designed sole for enhanced arch training during walking. The sole comprises a front part, a middle part, and a rear part. The front part includes a transitional zoom and a toe support zoom, facilitating a point of force during walking for effective arch muscle training. The toe support zoom lies on a second horizontal sur...