ALEXANDRIA, Va., May 26 -- United States Patent no. 12,636,263, issued on May 26, was assigned to Zhejiang Medicine Co. LTD Xinchang Pharmaceutical Factory (Xinchang, China).

"Carotenoid compound coming from plant and containing natural astaxanthin, preparation method therefor, and composition" was invented by Xinde Xu (Xinchang County, China), Bin Shao (Xinchang County, China), Yongjian Peng (Xinchang County, China) and Shengnan Wang (Xinchang County, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention provides a high-content carotenoid compound from Adonis amurensis. The content of the total carotenoid of the carotenoid compound is higher than 95%. The content of all-trans (3S, 3'S)-...