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:
Apr. 07, 1981
Filed:
Aug. 01, 1979
Applicant:
Inventors:
Mitsuru Tsuda, Mishima, JP;
Toshio Tatano, Numazu, JP;
Assignee:
Kyowa Hakko Kogyo Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C12Q / ; C12Q / ; C12Q / ; C12Q / ;
U.S. Cl.
CPC ...
435 10 ; 2323 / ; 23901 ; 23909 ; 23925 ; 23932 ; 435 11 ; 435 14 ; 435 28 ;
Abstract
A method of and reagent for determining hydrogen peroxide, in which the hydrogen peroxide containing sample is treated with a colouring reagent comprising a peroxidase, a hydrogen donor and an electron or radical acceptor which react stoichiometrically with the hydrogen peroxide to produce a pigment which is then measured colorimetrically. In accordance with the invention the hydrogen donor is specifically a compound of the formula ##STR1## where R.sub.1 is CH.sub.3, C.sub.2 H.sub.5, CH.sub.2 OH, CH.sub.2 CH.sub.2 OH, CH.sub.2 CH.sub.2 NH.sub.2 or COCH.sub.3 ;