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:
Jun. 18, 2013
Filed:
May. 18, 2010
Applicants:
Christian Hassman, Mittelneufnach, DE;
Jörg Lehnert, Schwabmünchen, DE;
Hans-juergen Meitinger, Groβaitingen, DE;
Inventors:
Christian Hassman, Mittelneufnach, DE;
Jörg Lehnert, Schwabmünchen, DE;
Hans-Juergen Meitinger, Groβaitingen, DE;
Assignee:
Johns Manville, Denver, CO (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 46/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention relates to a method for the manufacture of a multilayered filter medium whose air permeability is at least 500 l/msec and a multilayered filter medium obtainable by said method which, when charged with 5 mg/cmSAE-dust of the class 'fine', exhibits a pressure increase of no more than 100 Pa.