ALEXANDRIA, Va., Jan. 29 -- United States Patent no. 12,209,362, issued on Jan. 28, was assigned to SUMITOMO ELECTRIC INDUSTRIES LTD. (Osaka, Japan).
"Steel wire and tire" was invented by Tetsuya Nakajima (Osaka, Japan), Akifumi Matsuoka (Osaka, Japan) and Ken Manabe (Osaka, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A steel wire having a cross section perpendicular to a longitudinal direction having a flat shape, and an outer shape of the cross section including a pair of linear parts opposing each other, and a pair of curved parts opposing each other and connecting the linear parts. The curved part includes a pair of first regions located at positions near the linear parts, and a second region lo...