The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Nov. 10, 2026

Filed:

Jul. 21, 2021
Applicant:

Denka Company Limited, Tokyo, JP;

Inventors:

Eriko Yoshizawa, Niigata, JP;

Yuki Shinohara, Niigata, JP;

Shino Muramatsu, Niigata, JP;

Miwa Kuwahara, Niigata, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N 33/543 (2006.01); G01N 33/531 (2006.01); G01N 33/569 (2006.01);
U.S. Cl.
CPC ...
G01N 33/54388 (2021.08); G01N 33/531 (2013.01); G01N 33/54387 (2021.08); G01N 33/54393 (2013.01); G01N 33/569 (2013.01); G01N 33/56983 (2013.01); G01N 2469/00 (2013.01);
Abstract

An object is to strongly suppress a false negative reaction and a false positive reaction, which cannot be sufficiently suppressed by a conventional method, in detection of an antigen such as a virus, a bacterium, or a protein to be detected in a specimen originated from a body fluid such as a nasal swab specimen, a nasal aspirate specimen, a nasal wash specimen, a blown snot specimen, a pharyngeal swab specimen, or a saliva specimen with a detection reagent utilizing an antigen-antibody reaction or a reaction between substances interacting with each other. The present invention provides a test reagent for detecting a target substance in a specimen by utilizing an antigen-antibody reaction or a binding reaction between substances interacting with each other, comprising a specimen extracting solution containing a chelating agent.


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Yoshizawa, Eriko. (2026). Test reagent with ameliorated signal reduction (U.S. Patent No. 12791557). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12791557

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