US Patent Issued to Clean Planet Energy A Trading Name of Pyroplast Energy on Sept. 29 for "Method of upgrading highly olefinic oils derived from waste plastic pyrolysis" (British Inventors)

ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,747,402, issued on Sept. 29, was assigned to Clean Planet Energy A Trading Name of Pyroplast Energy Ltd (London).

"Method of upgrading highly olefinic oils derived from waste plastic pyrolysis" was invented by Andrew Odjo (London), Bertie Stephens (London), Ridwan Choudhury (London), Christine Loehaaversen (London) and Daniel Odjo (London).

According to the abstract* released by the U.S. Patent & Trademark Office: "A two-stage process of waste plastics pyrolysis oil upgrading via hydroprocessing is described. The process involves combining hydrogen gas with a highly-olefinic pyrolysis oil liquid feed and a saturated near zero olefins stream to form an attenuated feed stream to a fir...