ALEXANDRIA, Va., June 18 -- United States Patent no. 12,325,872, issued on June 10, was assigned to CATHAY BIOTECH INC. (Shanghai) and CIBT America Inc. (Newark, Del.).

"Method of improving acid decarboxylase activity in vitro under alkaline pH" was invented by Howard Chou (Shanghai), Ling Chen (Shanghai), Wenqiang Lu (Shanghai) and Xiucai Liu (Shanghai).

According to the abstract* released by the U.S. Patent & Trademark Office: "This invention provides acid decarboxylase-prion subunit fusion polypeptides, nucleic acid sequences, expression vectors, and host cells expression such fusion polypeptides to produce various amino acids and derivatives of the amino acids such as polyamines."

The patent was filed on April 13, 2023, under Applica...