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:
Oct. 23, 1984
Filed:
Feb. 26, 1982
Applicant:
Inventors:
Assignee:
Fuji Photo Film Co., Ltd., Saitama, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N / ; C12Q / ;
U.S. Cl.
CPC ...
436 66 ; 422 56 ; 435 28 ; 435805 ; 436135 ; 436170 ; 436904 ;
Abstract
A quantitative analysis film comprising a reagent layer comprising a cationic dye-forming color indicator for detecting hydrogen peroxide and an anionic polymer. By the use of such a color indicator and an anionic polymer in combination, a cationic dye is formed; the formed cationic dye is then bound and fixed to the anionic polymer to provide an intensified color. A method for the colorimetric assay of hydrogen peroxide or a precursor thereof with high sensitivity and high efficiency is also disclosed.