ALEXANDRIA, Va., March 31 -- United States Patent no. 12,589,683, issued on March 31, was assigned to TOYOTA BOSHOKU K.K. (Aichi-Ken, Japan).

"Seat pad" was invented by Hiroyuki Nakazono (Aichi-ken, Japan) and Naoto Shimotoi (Aichi-ken, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A seat pad having a pad body made of a polyurethane foam molding, a ventilation passage extending along a pad back surface of the pad body, a duct member which is harder than the pad body forming an inner peripheral wall of the ventilation passage, and a back surface member provided along the pad back surface. The duct member and the back surface member are integrally foam-molded with the pad body. The back surface member h...