ALEXANDRIA, Va., March 17 -- United States Patent no. 12,577,633, issued on March 17, was assigned to Galdieria Co. Ltd. (Tokyo).

"Agent for selective metal recovery, metal recovery method, and metal elution method" was invented by Ayumi Minoda (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "The agent for selective metal recovery of the present invention includes a material derived from an alga belonging to the order Cyanidiales, which is dead cells or a cell surface layer of an alga belonging to the order Cyanidiales, or an artificial material produced by simulating the cell surface layer, or includes a porphyrin. The metal recovery method of the present invention includes an addition step of adding a...