US Patent Issued to ExxonMobil Chemical Patents, Chevron Oronite on Dec. 23 for "Ethylene-propylene branched copolymers as viscosity modifiers" (Texas, California Inventors)

ALEXANDRIA, Va., Dec. 23 -- United States Patent no. 12,503,665, issued on Dec. 23, was assigned to ExxonMobil Chemical Patents Inc. (Houston) and Chevron Oronite Co. LLC (San Ramon, Calif.).

"Ethylene-propylene branched copolymers as viscosity modifiers" was invented by Jo Ann M. Canich (Houston), Jingwen Zhang (Houston), Sara Yue Zhang (Danville, Calif.), David L. Morgan (Pleasanton, Calif.), John R. Hagadorn (Houston), Peijun Jiang (Katy, Texas) and Maryam Sepehr (San Ramon, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure relates to lubricant compositions comprising a branched copolymer and methods for making such compositions. Lubricant compositions of the present disclosure ...