US Patent Issued to HUNAN BEIBEISHENG BIOTECHNOLOGY INDUSTRIAL on May 13 for "Method for extracting useful substances from shrimp shells" (Chinese Inventors)

ALEXANDRIA, Va., June 12 -- United States Patent no. 12,297,228, issued on May 13, was assigned to HUNAN BEIBEISHENG BIOTECHNOLOGY INDUSTRIAL Co. LTD..

"Method for extracting useful substances from shrimp shells" was invented by Yusen Liu (Changsha, China) and Hongchang Liu (Changsha, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed is a method for extracting useful substances from shrimp shells. The method comprises: crushing the shrimp shells, mixing the crushed shrimp shells and water, then heating same to 28deg C.-35deg C., adjusting the pH value to 6.8-7.5, preferably 6.8-7, then adding an alkaline protease and mixing same, heating same to 42deg C.-48deg C., performing constant-temperature...