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. 27, 2021
Filed:
Apr. 12, 2019
Applicant:
Carl Freudenberg KG, Weinheim, DE;
Inventors:
Christian Ewald, Rimbach, DE;
Juergen Becker, Zeiskam, DE;
Assignee:
CARL FREUDENBERG KG, Weinheim, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 46/10 (2006.01); B01D 46/52 (2006.01); B01D 46/00 (2006.01);
U.S. Cl.
CPC ...
B01D 46/10 (2013.01); B01D 46/0005 (2013.01); B01D 46/0023 (2013.01); B01D 46/523 (2013.01);
Abstract
A filter for cleaning air includes: a housing; layers of a filter medium, the layers being arranged in the housing; and separator plates. One separator plate is arranged between each two layers of the filter medium. The separator plates are provided with a perforation. In an embodiment, the separator plates are fluted, corrugated, or folded.