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:
Mar. 03, 2026
Filed:
Aug. 04, 2021
Carl Freudenberg KG, Weinheim, DE;
Achim Bock, Weinheim, DE;
Kristof Klein, Weinheim, DE;
Christoph Rakousky, Ober-Ramstadt, DE;
Hannes Barsch, Heidelberg, DE;
CARL FREUDENBERG KG, Weinheim, DE;
Abstract
A gas diffusion layer for a fuel cell, including a flat electrically conductive material and/or a sintered product of the flat electrically conductive material. The flat electrically conductive material includes at least one fiber material selected from the group consisting of carbon fiber nonwoven fabrics, carbon fiber woven fabrics, and a combination thereof. The at least one fiber material includes at least one fluorine-containing polymer and at least one polymer different from the at least one fluorine-containing polymer selected from the group consisting of polyaryletherketones, polyphenylene sulfides, polysulfones, polyethersulfones, partially aromatic (co)polyamides, polyimides, polyamide-imides, polyether-imides and combinations thereof. The at least one fluorine-containing polymer and the at least one polymer different from the at least one fluorine-containing polymer are applied to the at least one fiber material and/or incorporated therein.