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. 01, 2010
Filed:
Jun. 18, 2004
David W. Burke, Carmel, IN (US);
Michael Marquant, Mannheim, DE;
Udo Zapf, Speyer, DE;
Michael Fritz, Biblis, DE;
Dan Mosoiu, Limburgerhof, DE;
Chris Wilsey, Carmel, IN (US);
David W. Burke, Carmel, IN (US);
Michael Marquant, Mannheim, DE;
Udo Zapf, Speyer, DE;
Michael Fritz, Biblis, DE;
Dan Mosoiu, Limburgerhof, DE;
Chris Wilsey, Carmel, IN (US);
Roche Diagnostics Operations, Inc., Indianapolis, IN (US);
Roche Operations, Ltd., Hamilton, BM;
Abstract
A test strip having a small sample-receiving chamber on the order of less than 1 microliter. The inventive test strip includes a reagent layer that extends across the width of the test strip and also extends to the sample-receiving end, such that the edges of the reagent layer are aligned with the side and dose receiving edges of the test strip. The hydrophilic reagent extending to the dosing edge of the strip promotes wicking of the sample into the test strip. The end and side edges of the reagent layer are preferably formed as part of a cutting process that forms individual test strips from a larger web, which results in a smooth and thin reagent layer with a uniform thickness, substantially covering the entire floor of the sample-receiving chamber. The inventive mass production process helps improve the reproducibility of the quantity, location, thickness and other properties of the reagent layer, which in turn improves the accuracy of the test result.