ALEXANDRIA, Va., Jan. 28 -- United States Patent no. 12,533,427, issued on Jan. 27, was assigned to NATIONAL INSTITUTES FOR QUANTUM SCIENCE & TECHNOLOGY (Chiba, Japan).

"Radioactive antitumor agent" was invented by Yukie Yoshii (Chiba, Japan) and Hiroki Matsumoto (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "This radioactive antitumor agent comprises a radioactive dithiosemicarbazone-copper complex as an active ingredient, and is characterized by being used in such a way that the radioactive dithiosemicarbazone-copper complex is administered multiple times to an organism requiring tumor treatment, at a radioactive dose that avoids dose-limiting toxicity, as determined on the basis of hematological pa...