US Patent Issued to ADEKA on March 18 for "Acrylate-based copolymer, method for producing said copolymer, friction reducer using said copolymer, and lubricating composition containing said friction reducer" (Japanese Inventors)

ALEXANDRIA, Va., March 19 -- United States Patent no. 12,252,567, issued on March 18, was assigned to ADEKA Corp. (Tokyo).

"Acrylate-based copolymer, method for producing said copolymer, friction reducer using said copolymer, and lubricating composition containing said friction reducer" was invented by Kenji Yamamoto (Tokyo), Tsuyoshi Hiramatsu (Tokyo), Shuhei Igarashi (Tokyo) and Kazuki Marumo (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention provides an acrylate-based copolymer obtained by polymerizing constituent monomers including a polymerizable monomer (a) consisting of an alkyl acrylate-based monomer represented by the following general formula (1) in an amount of from 10 mol...