US Patent Issued to NATIONAL UNIVERSITY CORPORATION HOKKAIDO UNIVERSITY on April 21 for "Rare earth complex" (Japanese Inventors)

ALEXANDRIA, Va., April 21 -- United States Patent no. 12,606,738, issued on April 21, was assigned to NATIONAL UNIVERSITY CORPORATION HOKKAIDO UNIVERSITY (Sapporo, Japan).

"Rare earth complex" was invented by Yuichi Kitagawa (Sapporo, Japan), Ayu Naito (Sapporo, Japan), Yasuchika Hasegawa (Sapporo, Japan) and Koji Fushimi (Sapporo, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed is a rare earth complex including: one or a plurality of rare earth ions; and a ligand forming a coordinate bond with the rare earth ions. At least a part of the rare earth ions are at least one kind selected from the group consisting of lutetium(III) ions, yttrium(III) ions, and gadolinium(III) ions. The ligand includ...