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:
Mar. 06, 2012
Filed:
Sep. 01, 2010
Nikolaus Moser, Ditzingen, DE;
Stefan Walz, Freiberg a. N., DE;
Nikolaus Moser, Ditzingen, DE;
Stefan Walz, Freiberg a. N., DE;
Mann+Hummel GmbH, Ludwigsburg, DE;
Abstract
A filter device has a filter element made from a filter hose that has a filter wall separating an unfiltered side from a clean side of the filter device in a radial direction. In preferred embodiments the filter wall of the filter hose is provided with a very fine particle filtration layer including nanofibers. The diameter of the nanofibers is less than one micrometer. The nanofiber layer can be applied to a green filter material and the filter element can be produced subsequently from the filter material with applied nanofiber layer. Alternatively, the nanofiber layer can be applied to a finished filter element.