ALEXANDRIA, Va., Aug. 12 -- United States Patent no. 12,702,187, issued on Aug. 11, was assigned to MAOTAI (FUJIAN) NEW MATERIAL TECHNOLOGY Co. LTD (Jinjiang, China).

"Waterproof, breathable, and shock-absorbing shoe sole" was invented by Sien Ding (Jinjiang, China), Rongda Zheng (Jinjiang, China) and Weizhi Zhuang (Jinjiang, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A waterproof, breathable, and shock-absorbing shoe sole. The shoe sole includes a midsole and an outsole compositing at the lower end of the midsole. A cavity and a spiral channel corresponding to the cavity are provided between the midsole and the outsole, and the spiral channel expands from the edge of the cavity from inside to outs...