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:
Nov. 26, 1991
Filed:
Dec. 01, 1989
Richard C Driscoll, Raleigh, NC (US);
Akzo N.V., Arnhem, NL;
Abstract
A method for measuring the concentration of a reagent in a reaction mixture including the steps of: adding dye to a reagent until the dye is at a given concentration in the reagent; mixing the reagent with a reaction mixture comprising a sample which reacts with the reagent to form a reaction product; measuring the formation of reaction product at a first spectral region; measuring the concentration of dye in the reaction mixture at a second spectral region in which the dye has an optical characteristic such as absorption or fluorescence, the second spectral region being different from the first spectral region; and determining the concentration of the reagent in the reaction mixture based on the concentration of dye measured. In a further aspect of the invention there is provided a reagent containing a dye useful in the above method.