Monopar and NorthStar Announce Patent Filing on Promising Radiopharmaceutical Discovery Font : A-A+ WILMETTE, Ill. and BELOIT, Wis., May 24, 2021 (GLOBE NEWSWIRE) -- Monopar Therapeutics Inc. (Nasdaq: MNPR) and NorthStar Medical Radioisotopes, LLC, today announced the filing of a provisional patent with the U.S. Patent and Trademark Office (USPTO) titled Bio-Targeted Radiopharmaceutical Compositions Containing Ac-225 and Methods of Preparation. Radiopharmaceutical therapy is a promising approach to treat cancer and other diseases using radioactive metals bound with proteins/antibodies...