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:
Jul. 06, 1999
Filed:
Oct. 09, 1997
Applicant:
Inventors:
Michael Geiger, Heibroun, DE;
Joachim Montnacher, Rehlingen, DE;
Josef Rohrmeier, Laberweinting, DE;
Thomas Zink, Stuttgart, DE;
Assignees:
Filterwerk Mann & Hummel GmbH, Ludwigsburg, DE;
Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung E.V., Munich, DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B31B / ; B31B / ;
U.S. Cl.
CPC ...
493359 ; 493402 ; 493403 ; 493417 ; 493422 ; 493424 ; 493941 ; 2191217 ;
Abstract
A method for the manufacture of filters in which a filter material in the rm of a continuous web is pre-embossed, perforated with a laser beam, and then pleated. The pleated filter element is fixed in a subsequent operation in an apparatus and the perforated scrap areas and are removed from the filter element.