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:
Feb. 18, 2025
Filed:
Aug. 16, 2021
Applicant:
Mann+hummel Gmbh, Ludwigsburg, DE;
Inventors:
Assignee:
MANN+HUMMEL GmbH, Ludwigsburg, DE;
Primary Examiner:
Int. Cl.
CPC ...
B01D 53/82 (2006.01); B01D 39/16 (2006.01); B01D 39/20 (2006.01); B01D 53/44 (2006.01); B01D 53/56 (2006.01); B01J 20/04 (2006.01); B01J 20/08 (2006.01); B01J 20/20 (2006.01); B01J 20/26 (2006.01); B01J 20/28 (2006.01);
U.S. Cl.
CPC ...
B01D 53/82 (2013.01); B01D 39/1623 (2013.01); B01D 39/2062 (2013.01); B01D 39/2079 (2013.01); B01D 53/44 (2013.01); B01D 53/565 (2013.01); B01J 20/041 (2013.01); B01J 20/08 (2013.01); B01J 20/20 (2013.01); B01J 20/261 (2013.01); B01J 20/262 (2013.01); B01J 20/28035 (2013.01); B01J 20/28038 (2013.01); B01J 20/28061 (2013.01); B01J 20/28064 (2013.01); B01J 20/28066 (2013.01); B01D 2239/0407 (2013.01); B01D 2239/0464 (2013.01); B01D 2239/0618 (2013.01); B01D 2239/065 (2013.01); B01D 2239/083 (2013.01); B01D 2239/10 (2013.01); B01D 2239/1241 (2013.01); B01D 2239/1291 (2013.01); B01D 2253/102 (2013.01); B01D 2253/25 (2013.01); B01D 2253/304 (2013.01); B01D 2253/306 (2013.01); B01D 2257/404 (2013.01); B01D 2257/708 (2013.01);
Abstract
A filter medium is provided with a layer (A) provided with non-impregnated active carbon, a layer (B) with a solid carrier material that is impregnated with a permanganate salt, and a layer (C) with alkaline impregnated active carbon. The layer (B) and the layer (C) are arranged such that a gas flowing through the filter medium flows through the layer (B) before flowing through the layer (C). The layer (A) is arranged such that the gas flowing through the filter medium flows through the layer (A) before flowing through the layer (B) or the gas flowing through the filter medium flows through the layer (A) after flowing through the layer (C).