US Patent Issued to Chevron U.S.A. on March 17 for "Process and system for upgrading hydrocracker unconverted heavy oil" (California, New Jersey Inventors)

ALEXANDRIA, Va., March 17 -- United States Patent no. 12,577,477, issued on March 17, was assigned to Chevron U.S.A. Inc. (San Ramon, Calif.).

"Process and system for upgrading hydrocracker unconverted heavy oil" was invented by Goutam Biswas (Danville, Calif.), Arun Arora (Edison, N.J.), Bruce Edward Reynolds (Martinez, Calif.), Julie Elaine Chabot (Novato, Calif.), Michael McMullin (Sonoma, Calif.) and ShuWu Yang (Richmond, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Processes and systems for upgrading hydrocracker unconverted heavy oil are provided. The invention is useful in upgrading unconverted heavy oil such as resid derived from hydrocracking processes and may be used to upgrade such resids...