US Patent Issued to Chevron U.S.A. on March 24 for "Process and system for base oil production" (California Inventors)

ALEXANDRIA, Va., March 24 -- United States Patent no. 12,584,072, issued on March 24, was assigned to Chevron U.S.A. Inc. (San Ramon, Calif.).

"Process and system for base oil production" was invented by Subhasis Bhattacharya (San Ramon, Calif.), Yihua Zhang (Albany, Calif.), Guan-Dao Lei (Walnut Creek, Calif.) and Ajit R. Pradhan (San Ramon, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An improved process and catalyst system for making a base oil product and for improving base oil cloud point and pour point characteristics, while also providing good product yields. The process and catalyst system generally involves the use of a layered catalyst system comprising an SSZ-91 catalyst and an SSZ-32X ca...