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. 11, 2025
Filed:
Jun. 08, 2023
Applicant:
Purem Gmbh, Neunkirchen, DE;
Inventors:
Martin Wagmann, St. Wendel, DE;
Felix Hackländer, Esslingen, DE;
Assignee:
Purem GmbH, Neunkirchen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01N 1/08 (2006.01); F01N 13/18 (2010.01);
U.S. Cl.
CPC ...
F01N 1/089 (2013.01); F01N 13/1861 (2013.01); F01N 2470/02 (2013.01); F01N 2490/08 (2013.01);
Abstract
A muffler for an exhaust system of an internal combustion engine includes at least one muffler component with a perforation defined by a plurality of through-flow openings in a wall of the muffler component. The through-flow openings can be flowed through in a flow direction in the direction from an upstream side of the wall to a downstream side of the wall. At least in the case of some or all of the through-flow openings of the perforation, a through-flow opening flow cross section decreases in the flow direction in order to provide a through-flow opening flow-guiding surface.