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:
Feb. 23, 1993
Filed:
Feb. 12, 1991
Heino Eikmeier, Lorsch, DE;
Anselm Rothe, Birkenau, DE;
Boehringer Mannheim GmbH, Mannheim, DE;
Abstract
Test carrier for analyzing a sample fluid with several test layers which form a sample fluid transport path and contain a reagent system which reacts with the sample fluid to produce a detectable signal. The test carrier includes a reservoir layer of absorbent material, a detection layer arranged in the fluid transport path downstream the reservoir layer, in which a detectable signal is formed, and a separating layer arranged between the reservoir layer and the detection layer. The separating layer makes a two-step process possible. Fluid contact between the reservoir layer and the detection layer arises only with pressure loading of the layer assembly of the reservoir layer, separating layer and detection layer. A more uniform optical detection signal, and consequently better accuracy, can be achieved because the separating layer is made up of a hydrophilic material, wich is in the form of a lattice-shaped structure, in which the mean width of the lattice openings is more than 0.05 mm, and the threads from which the lattice-shaped structure is formed are multi-filament.