US Patent Issued to Chevron U.S.A. on Sept. 16 for "Process for stable blend of waste plastic with petroleum feed for feeding to oil refinery units and process of preparing same" (California Inventors)

ALEXANDRIA, Va., Sept. 17 -- United States Patent no. 12,415,958, issued on Sept. 16, was assigned to Chevron U.S.A. Inc. (San Ramon, Calif.).

"Process for stable blend of waste plastic with petroleum feed for feeding to oil refinery units and process of preparing same" was invented by Hye-Kyung C. Timken (San Ramon, Calif.), Joel E. Schmidt (San Ramon, Calif.) and Tengfei Liu (San Ramon, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a blend of a petroleum feedstock and 1-20 wt. % of plastic, based on the weight of the blend, with the plastic comprising polyethylene and/or polypropylene, and the plastic in the blend comprising finely dispersed microcrystalline particles having an average ...