US Patent Issued to YARA INTERNATIONAL ASA, REETEC AS on Feb. 24 for "Method for selective separation of thorium and cerium from a solid concentrate comprising same and one or more further rare earth metals and acidic rare earth solution thereof" (Norwegian Inventors)

ALEXANDRIA, Va., Feb. 24 -- United States Patent no. 12,559,822, issued on Feb. 24, was assigned to YARA INTERNATIONAL ASA (Oslo, Norway) and REETEC AS (Oslo, Norway).

"Method for selective separation of thorium and cerium from a solid concentrate comprising same and one or more further rare earth metals and acidic rare earth solution thereof" was invented by Tom R. Jorgensen (Porsgrunn, Norway), Fredrik Rodahl (Sandefjord, Norway) and Sigve Sporstol (Hagan, Norway).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for separating thorium and cerium from a solid concentrate comprising compounds of thorium, cerium and further rare earth metals, comprising: a) contacting the solid concentrate with an acid ...