US Patent Issued to Shanxi Agricultural University on May 20 for "Preparation method of composite slow-release nano-nitrogen fertilizer" (Chinese Inventors)

ALEXANDRIA, Va., June 16 -- United States Patent no. 12,304,877, issued on May 20, was assigned to Shanxi Agricultural University (Taiyuan, China).

"Preparation method of composite slow-release nano-nitrogen fertilizer" was invented by Xiangyang Hou (Taiyuan, China), Guohua Ren (Taiyuan, China), Lixia Du (Taiyuan, China), Caixia Wang (Taiyuan, China) and Liyuan Cui (Taiyuan, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A preparation method of a composite slow-release nano-nitrogen fertilizer: stirring cellulose, nanoclay, and water to allow a reaction to obtain a mixture, subjecting the mixture to solid-liquid separation, and then subjecting an obtained solid to drying, crushing, and sieving in seque...