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. 24, 2015
Filed:
Jul. 16, 2004
Peter Kritzer, Forst, DE;
Raoul Farer, Essen, DE;
Guenter Frey, Schliengen, DE;
Michael Appelgruen, Voerstetten, DE;
Rolf-peter Schwoebel, Waldmichelbach, DE;
Peter Kritzer, Forst, DE;
Raoul Farer, Essen, DE;
Guenter Frey, Schliengen, DE;
Michael Appelgruen, Voerstetten, DE;
Rolf-Peter Schwoebel, Waldmichelbach, DE;
Carl Freudenberg KG, Weinheim, DE;
Abstract
An ultrathin, porous, and mechanically stable nonwoven fabric, a method for manufacturing the fabric, and the fabric's use are described. A nonwoven fabric is described having a thickness of less than 30 μm, which is chemically and/or thermally bonded, whose maximum tensile load in at least one direction is at least 15 N/5 cm, whose stretching in this direction at maximum tensile load is 35% at the most, and which has a porosity of at least 25%. This nonwoven fabric may be used as a separator material or as a carrier material for diaphragms.