US Patent Issued to KYODO YUSHI on July 14 for "Ball screw grease composition for rack-assisted electric power steering" (Japanese Inventors)

ALEXANDRIA, Va., July 14 -- United States Patent no. 12,680,047, issued on July 14, was assigned to KYODO YUSHI Co. Ltd. (Fujisawa, Japan).

"Ball screw grease composition for rack-assisted electric power steering" was invented by Minami Soma (Fujisawa, Japan), Tsuyoshi Kochi (Fujisawa, Japan) and Tomonobu Komoriya (Fujisawa, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A ball screw grease composition for a rack-assisted electric power steering contains a thickener, a base oil, and at least one compound selected from the group consisting of a Ca sulfonates, fatty acids, and triglycerides, wherein the kinematic viscosity of the base oil at 40deg C. is 4-100 mm2/s, and the worked penetration of the comp...