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.
Patent No.:
Date of Patent:
Dec. 04, 2018
Filed:
Mar. 23, 2015
Applicant:
Arkray, Inc., Kyoto, JP;
Inventors:
Kazuhiro Omiya, Kyoto, JP;
Toshihiro Imai, Kyoto, JP;
Assignee:
ARKRAY, Inc., Kyoto, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N 31/22 (2006.01); G01N 1/28 (2006.01); G01N 35/10 (2006.01); G01N 33/84 (2006.01); G01N 35/04 (2006.01); B01L 3/00 (2006.01);
U.S. Cl.
CPC ...
G01N 1/28 (2013.01); G01N 31/228 (2013.01); G01N 33/84 (2013.01); G01N 35/1002 (2013.01); B01L 3/502 (2013.01); B01L 3/5085 (2013.01); G01N 2035/0436 (2013.01); Y10T 436/206664 (2015.01);
Abstract
A method is provided for suppressing, in a color reagent solution which is used to measure a component within a sample and which contains an oxidative color reagent dissolved therein, a background rise that occurs when the color reagent solution is stored. The method includes adjusting a hydrogen ion exponent (pH) of the color reagent solution so as to be strongly acidic. The hydrogen ion exponent is preferably adjusted to 2.9 or below or to 2.1 or below. The color reagent solution is preferably used to measure the degree of oxidative stress. The oxidative color reagent is preferably a phenylenediamine derivative.