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:
Nov. 19, 2013
Filed:
Dec. 20, 2011
Herbert Harttig, Neustadt, DE;
Bernd Hiller, Lampertheim, DE;
Wolfgang Schwoebel, Mannheim, DE;
Alexander Kasejew, Mannheim, DE;
Herbert Harttig, Neustadt, DE;
Bernd Hiller, Lampertheim, DE;
Wolfgang Schwoebel, Mannheim, DE;
Alexander Kasejew, Mannheim, DE;
Roche Diagnostics Operations, Inc., Indianapolis, IN (US);
Abstract
Methods of producing an analysis spreading layer for absorbing a liquid to be analyzed, by: supplying a porous membrane having a bottom, a top and a thickness D, the size of the pores of the membrane increasing over its thickness D; cutting the membrane at a predefined distance, the spreading layer being a sublayer with a thickness d less than the starting thickness D, the pores of the spreading layer having a fluid connection to one another in such a manner that it is permeable to a liquid. The membrane surface is formed by removing a sublayer of the membrane being the liquid outlet side of the spreading layer. The mean size of the pores on the liquid outlet side is at least 1 μm.