ALEXANDRIA, Va., Dec. 31 -- United States Patent no. 12,507,922, issued on Dec. 30, was assigned to PHC HOLDINGS Corp. (Tokyo).

"Protective film material for biosensor probe" was invented by Takashi Endoh (Ehime, Japan) and Junko Ikeda (Ehime, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure provides, as a film structure useful for a probe of a biosensor, a film structure comprising a detection layer including an analyte-responsive enzyme; and a protection film formed on the detection layer, in which the protection film includes a copolymer mixture including poly(styrene-ran-4-vinylpyridine-ran-propyleneglycol methacrylate); and poly(4-vinylpyridine)-block-poly(C1-15 alkyl methacry...