US Patent Issued to CHEVRON ORONITE, CHEVRON JAPAN on June 17 for "Ashless additive composition" (American, Japanese Inventors)

ALEXANDRIA, Va., June 19 -- United States Patent no. 12,331,260, issued on June 17, was assigned to CHEVRON ORONITE COMPANY LLC (San Ramon, Calif.) and CHEVRON JAPAN LTD. (Tokyo).

"Ashless additive composition" was invented by William Raymond Ruhe Jr. (Benicia, Calif.), Masami Fuchi (Makinohara, Japan) and Seyedeh Mahboobeh Hosseini (Richmond, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "This disclosure describes an ashless lubricant additive. The additive is a tertiary amine-containing compound having the following structure:where each R1 and R5 is independently a linear or branched-chain monovalent hydrocarbyl group having two to about twenty carbon atoms, where each R2, R3, and R4 is independentl...