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:
Aug. 08, 1989
Filed:
Sep. 11, 1987
Steven C Charlton, Elkhart, IN (US);
Elva Kurchacova, Elkhart, IN (US);
Miles Inc., Elkhart, IN (US);
Abstract
The invention involves visual determination of hydrogen peroxide with a multiple oxidative indicator system capable of generating different hues at different concentrations of hydrogen peroxide or at different concentrations of an analyte from which hydrogen peroxide is generated by means of an analyte specific oxidase. A first indicator component of the multiple oxidative indicator system is oxidized from a particular hue to a different hue which is preferably essentially colorless. A second indicator component is oxidized to a hue which is visually distinct from the first indicator component in either of its hues. A third indicator component may also be present which is oxidized to provide a colorimetric response. Each component is oxidized only by hydrogen peroxide and peroxidase. The multiple oxidative indicator system is capable of generating visually distinct hues at different concentrations of hydrogen peroxide and can be used to generate a 'rainbow' of hues when the indicator components are oxidized sequentially.