US Patent Issued to FUJIAN GOLDEN DRAGON RARE EARTH on July 29 for "N,N-dihydrocarbonyl amino carboxylic acid, preparation method therefor and use thereof" (Chinese Inventors)

ALEXANDRIA, Va., July 30 -- United States Patent no. 12,371,399, issued on July 29, was assigned to FUJIAN GOLDEN DRAGON RARE EARTH Co. Ltd. (Longyan, China).

"N,N-dihydrocarbonyl amino carboxylic acid, preparation method therefor and use thereof" was invented by Yanliang Wang (Fujian, China), Wentao Xiao (Fujian, China), Yuyuan Wu (Fujian, China) and Jinchi Lin (Fujian, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present application provides an N,N-dihydrocarbonyl amino carboxylic acid, preparation method therefor and use thereof. The N,N-dihydrocarbonyl amino carboxylic acid can be used as an extractant for enriching rare earth elements from raw materials containing low-concentration rare eart...