US Patent Issued on June 2 for "Adsorbent particles, method for producing adsorbent particles, base material particles, filling column, and method for recovering rare earth element" (Japanese Inventors)

ALEXANDRIA, Va., June 2 -- United States Patent no. 12,643,089, issued on June 2.

"Adsorbent particles, method for producing adsorbent particles, base material particles, filling column, and method for recovering rare earth element" was invented by Masahiro Aoshima (Tokyo), Yohei Ishikawa (Tokyo) and Masato Miyatake (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "Adsorbent particles including: porous carrier particles containing an organic polymer; polyethylenimine attached to a surface of the porous carrier particles; and a diglycolic acid residue bonded to an amino group of the polyethylenimine. A most frequent pore size of the porous carrier particles exceeds 10 nm."

The patent was filed on Oct. 22...