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. 21, 2006
Filed:
Nov. 20, 1998
Gunnar-marcel Klein, Weilheim, DE;
Nikolaus Moser, Ditzingen, DE;
Gunnar-Marcel Klein, Weilheim, DE;
Nikolaus Moser, Ditzingen, DE;
Filterwerk Mann & Hummel GmbH, Ludwigsburg, DE;
Abstract
A filter element in which several layers () made of a filtering medium are joined contiguously in the direction of flow with at least one layer () made of a filtering medium with a high storage capacity and a low degree of separation being arranged on the in-flow side and at least one layer () made of a filtering medium with a low storage capacity and a high degree of separation being arranged on the out-flow side. Preferably the in-flow filtering medium is made of a filter paper containing cellulose or of a melt-blown material, and the out-flow side filtering medium is produced from a filter paper containing cellulose.