US Patent Issued to ENEOS on March 31 for "Lubricant additive, lubricant composition, and working fluid composition" (Japanese Inventors)

ALEXANDRIA, Va., March 31 -- United States Patent no. 12,590,263, issued on March 31, was assigned to ENEOS Corp. (Tokyo).

"Lubricant additive, lubricant composition, and working fluid composition" was invented by Yuya Mizutani (Tokyo), Hidetoshi Ogata (Tokyo), Tomohiro Takaki (Tokyo) and Takeshi Okido (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "An additive for a lubricating oil containing a phosphorus compound P represented by the following formula (1):wherein R1 and R2 each independently represent an alkyl group having 1 to 3 carbon atoms, and n represents an integer of 0 to 3, wherein the phosphorus compound P contains a phosphorus compound P0 wherein n is 0, a phosphorus compound P1 wherein n i...