US Patent Issued to YARA INTERNATIONAL ASA on Feb. 10 for "Process for the removal of heavy metals from a phosphoric acid containing composition" (Norwegian, Polish Inventors)

ALEXANDRIA, Va., Feb. 11 -- United States Patent no. 12,545,583, issued on Feb. 10, was assigned to YARA INTERNATIONAL ASA (Oslo, Norway).

"Process for the removal of heavy metals from a phosphoric acid containing composition" was invented by Patrycja Kita (Poznan, Poland), Tom Rames Jorgensen (Porsgrunn, Norway), Tanja Vojnovic (Skien, Norway) and Katrine Lie Boyesen (Skien, Norway).

According to the abstract* released by the U.S. Patent & Trademark Office: "Improved methods for the removal of heavy metals, in particular cadmium, from an aqueous phosphoric acid containing composition, using an organothiophosphorous heavy metal precipitating agent to said composition, wherein the reaction between the heavy metals, in particular cadmium, a...