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:
May. 14, 1985
Filed:
Aug. 15, 1983
James L Seago, Bear, DE (US);
E. I. Du Pont de Nemours and Company, Wilmington, DE (US);
Abstract
A method is described for the amperometric determination of the concentration in a biological sample of a constituent which is a substrate for an oxidase enzyme by (1) catalyzing the substrate with the enzyme, thereby consuming O.sub.2 and producing H.sub.2 O.sub.2 and (2) measuring the O.sub.2 consumption or H.sub.2 O.sub.2 production by means of an inert metal indicator electrode intimately coated with a thin film of a perfluorosulfonic acid polymer. A reaction chamber is described which provides means for contacting the sample with the enzyme and means for making amperometric measurements utilizing inert metal indicator electrodes coated with a thin film of a perfluorosulfonic acid polymer.