ALEXANDRIA, Va., Dec. 23 -- United States Patent no. 12,503,748, issued on Dec. 23, was assigned to SCK.CEN (Brussels).
"Purification of actinium" was invented by Dominic Maertens (Westerlo, Belgium), Karen Van Hecke (Lokeren, Belgium) and Thomas Cardinaels (Mol, Belgium).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method for purifying Ac from a mixture includes Ac and at least one element selected from Ra, Pb, Po, Bi and La. The method includes the steps of: (a) performing a first separation using a first extraction chromatographic column based on a first resin (either a diglycolamide resin or a dialkylphosphoric acid resin) and a first matrix solution; and (b) performing a second separation using a sec...