ALEXANDRIA, Va., Nov. 18 -- United States Patent no. 12,473,381, issued on Nov. 18, was assigned to Syngars Technology Co. Ltd. (Zhejiang, China).
"Method for separating and purifying fucoidan" was invented by Jinfa Fang (Lanxi, China), Qiang Huang (Lanxi, China) and Xinming Jiang (Lanxi, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a method for separating and purifying fucoidan, including: S1, subjecting a Undaria pinnatifida powder to extraction in hot water, filtering, and concentrating by rotary evaporation in sequence to obtain a concentrate; S2, adding an aqueous calcium chloride solution to the concentrate obtained in S1 in batches, where the aqueous calcium chloride solution is ex...