Transparent flow through membrane for dry reagent analytical devices

US6187268A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• James P. Albarella · Granger, US
• Karl HILDENBRAND · Krefeld, DE
• Spencer Lin · Walnut Creek, US
• Michael J. Pugia · Granger, US
• Lloyd Schulman · Elkhart, US

Key dates

• Filing date: Sep 27, 1999
• Grant date: Feb 13, 2001
• Expiry date: Sep 27, 2019

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S436/81
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

Disclosed is a diagnostic device for the colorimetric detection of an analyte in a test fluid. The device is a dry reagent layer which is overcoated with a transparent, fluid permeable membrane. The membrane is made up of a combination of a water dispersible and a water soluble polymer. The membrane may contain a surfactant and a thickener.