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:
May. 27, 2025
Filed:
Nov. 05, 2020
Applicant:
Carl Freudenberg KG, Weinheim, DE;
Inventors:
Achim Bock, Weinheim, DE;
Kristof Klein, Weinheim, DE;
Christoph Rakousky, Ober-Ramstadt, DE;
Hannes Barsch, Heidelberg, DE;
Assignee:
CARL FREUDENBERG KG, Weinheim, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M 4/88 (2006.01);
U.S. Cl.
CPC ...
H01M 4/8807 (2013.01);
Abstract
A gas diffusion layer for a fuel cell includes: a) a flat, electrically conductive fiber material; and b) a microporous layer on one surface of the fiber material. The gas diffusion layer has, with respect to a base area thereof (in an xy plane), at least one property gradient relating to at least one chemical and/or physical property.