ALEXANDRIA, Va., Jan. 28 -- United States Patent no. 12,535,020, issued on Jan. 27.
"Sliding member" was invented by Hiroyuki Miyahara (Kumagaya, Japan), Masashi Kondo (Kumagaya, Japan), Noriyoshi Maruyama (Kumagaya, Japan) and Ikurou Takahashi (Kumagaya, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A sliding member according to the present invention is used in presence of lubricant oil, and includes a sliding surface made of a base material, and a recessed portion provided in the sliding surface, wherein the sliding surface satisfies a condition expressed by following Equation. 2 less than equal to Alpha / Ra less than equal to 100 In Equation, Alpha represents a ratio of a total volume of the reces...