ALEXANDRIA, Va., Aug. 12 -- United States Patent no. 12,703,672, issued on Aug. 11, was assigned to CHENGUANG BIOTECH GROUP Co. LTD. (Hebei, China).
"Industrial extraction method of cannabidiol" was invented by Qingguo Lu (Hebei, China), Yunhe Lian (Hebei, China), Wei Gao (Hebei, China), Yang Li (Hebei, China) and Hong Tian (Hebei, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed is an industrial extraction method of cannabidiol, pertaining to the field of medicine and chemical industry. The present invention aims to resolve the problems of difficulty in wax removal, low extraction rate of cannabidiol, and excessively high content of tetrahydrocannabinol during extraction using conventional sol...