US Patent Issued to Denka on Nov. 11 for "Immunochromatographic device for extracting and measuring sugar chain antigen" (Japanese Inventors)

ALEXANDRIA, Va., Nov. 11 -- United States Patent no. 12,467,923, issued on Nov. 11, was assigned to Denka Co. Ltd. (Tokyo).

"Immunochromatographic device for extracting and measuring sugar chain antigen" was invented by Daisuke Kato (Niigata, Japan) and Shino Muramatsu (Niigata, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "This invention provides a method and an immunochromatographic device that enable measurement with sufficient sensitivity by performing nitrous acid extraction over a sufficiently long period of time in an immunochromatographic method comprising extracting a sugar chain antigen with nitrous acid and measuring the extracted sugar chain antigen on an immunochromatographic test strip. ...