US Patent Issued to China Tin Nonferrous Metals, China Tin Group on Dec. 2 for "Preparation method of ionic rare earth leaching agent" (Chinese Inventors)

ALEXANDRIA, Va., Dec. 2 -- United States Patent no. 12,486,555, issued on Dec. 2, was assigned to China Tin Nonferrous Metals Co. Ltd. (Nanning, China) and China Tin Group Co. Ltd. (Liuzhou, China).

"Preparation method of ionic rare earth leaching agent" was invented by Mingzhen Hu (Nanning, China), Yongping Nong (Nanning, China) and Deyan Zhou (Nanning, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A preparation method of an ionic rare earth leaching agent includes the following steps: (1) domestication microorganisms with rare earth activated mineral powder culture medium to obtain a microbial suspension; (2) amplifying and culturing the microbial suspension and additives to obtain the amplified cul...