ALEXANDRIA, Va., Dec. 2 -- United States Patent no. 12,484,685, issued on Dec. 2, was assigned to Kao Corp. (Tokyo).
"Heating tool and method for manufacturing heating tool" was invented by Ryunosuke Matsumoto (Arakawa-ku, Japan), Ryuji Matsunaga (Utsunomiya, Japan) and Kazutoshi Ootsuka (Takanezawa-machi, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to a warming tool (1) in which a heat generating element (3) is held between a topsheet (5) that faces a heating target and a backsheet (6) that is located on a side away from the heating target, and a method for manufacturing the same. The heat generating element (3) has a first sheet (3f) arranged opposing the topsheet (5)...