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:
Jun. 17, 1997
Filed:
Jun. 22, 1995
Applicant:
Inventors:
Chi-Neng Arthur Han, Philadelphia, PA (US);
Kenneth J Dean, Carmel, IN (US);
Walter W Jernigan, Indianapolis, IN (US);
William R Carr, Indianapolis, IN (US);
Assignee:
Boehringer Mannheim Corporation, Indianapolis, IN (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C12Q / ; C12Q / ; C12Q / ; C12N / ;
U.S. Cl.
CPC ...
435 28 ; 435 14 ; 435-4 ; 435190 ; 436 63 ; 436 74 ; 424 941 ;
Abstract
The invention is a stable reagent used in assay systems that form a colored ferric ion complex, such as Prussian Blue. Such reagents are useful for the detection or measurement of an analyte from a fluid sample. Surprisingly, it has been found that the inclusion of certain ferric ion chelating agents, such as 3-sulfobenzoic acid, will inhibit formation of the blank reaction in the reagent.