US Patent Issued to NHK SPRING on Sept. 8 for "Coil spring" (Japanese, American Inventors)

ALEXANDRIA, Va., Sept. 8 -- United States Patent no. 12,729,738, issued on Sept. 8, was assigned to NHK SPRING Co. LTD. (Yokohama, Japan).

"Coil spring" was invented by Shinichi Nishizawa (Walled Lake, Mich.), Daisuke Ibano (Yokohama, Japan), Tsuyoshi Matsuda (Yokohama, Japan), Norifumi Arisaka (Yokohama, Japan), Shun Muramatsu (Yokohama, Japan), Chihiro Ito (Yokohama, Japan), Takuto Suzuki (Yokohama, Japan), Masatake Kinoshita (Yokohama, Japan) and Asuka Kawasaki (Yokohama, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A coil spring includes a wire rod and an elastic coat provided on the wire rod. The coil spring includes a coil section including a plurality of coil portions. The wire rod includes a ...