ALEXANDRIA, Va., Aug. 26 -- United States Patent no. 12,397,290, issued on Aug. 26, was assigned to APEX BIOTECHNOLOGY CORP. (Hsinchu, Taiwan).

"Biochemical test chip" was invented by Cheng-Yu Chou (Houlong Township, Miaoli County, Taiwan) and Chen-Yu Yang (Toufen, Taiwan).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure provides a biochemical test chip, including an electrode unit and a protective layer. The protective layer is electrically connected to the electrode unit. The protective layer is configured to oxidize the electrode unit after the electrode unit receives an electron or reduce the electrode unit after the electrode unit loses an electron. There is a potential difference (E...