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. 16, 1996
Filed:
Feb. 22, 1994
P Douglas Walling, Indianapolis, IN (US);
Joseph E Bateson, Carmel, IN (US);
Lance S Kuhn, Fishers, IN (US);
M Luann Ochs, Fishers, IN (US);
Kent M Kost, Fishers, IN (US);
Martin T Gerber, Carmel, IN (US);
Klaus H Pollmann, Neulussheim, DE;
Chi-Neng A Han, Philadelphia, PA (US);
Boehringer Mannheim Corporation, Indianapolis, IN (US);
Abstract
A new electrochemical biosensor and method of its use. The electrochemical biosensor has a pair of electrodes consisting of a working electrode and a counter electrode made of the same electrically conducting materials. The counter electrode may be the same size or smaller than the working electrode. The biosensor includes a sample receiving portion wherein a portion of the electrode surfaces is covered by a reagent that includes a redox mediator and an enzyme. A fluid that contains an analyte is added to the sample receiving portion. A reaction involving the analyte, enzyme and redox mediator occurs. After this reaction is complete, an electrical potential difference is applied between the electrodes. Diffusion limited current is measured and correlated to the concentration of analyte in the fluid.