US Patent Issued to ENEOS on Feb. 18 for "Refrigerating machine oil, working fluid composition for refrigerating machine, lubricating method, and method for producing refrigerating machine oil" (Japanese Inventors)

ALEXANDRIA, Va., Feb. 19 -- United States Patent no. 12,227,712, issued on Feb. 18, was assigned to ENEOS Corp. (Tokyo).

"Refrigerating machine oil, working fluid composition for refrigerating machine, lubricating method, and method for producing refrigerating machine oil" was invented by Yohei Shono (Tokyo) and Fumiyuki Nara (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A refrigerating machine oil containing: a lubricating base oil; and a polymer additive, wherein a carbon residue of 10% residual oil is 0.05% by mass or more."

The patent was filed on Nov. 13, 2020, under Application No. 17/776,400.

*For further information, including images, charts and tables, please visit: http://patft.uspto.gov/...