ALEXANDRIA, Va., Nov. 18 -- United States Patent no. 12,473,510, issued on Nov. 18, was assigned to JTEKT Corp. (Kariya, Japan).
"Grease composition and steering gear device" was invented by Yurie Yamashita Hagino (Kashihara, Japan) and Hiroki Tanaka (Kashihara, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A grease composition includes a base oil, a thickener, and an extreme pressure additive. The base oil contains trimellitate ester and poly-Alpha-olefin. A proportion of the trimellitate ester to a total amount of the trimellitate ester and the poly-Alpha-olefin is 10.0 mass % or more and 60.0 mass % or less. The thickener contains lithium 12-hydroxystearate and lithium stearate. A proportion of the...