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:
Jun. 23, 2026
Filed:
Aug. 31, 2021
Giesecke+devrient Currency Technology Gmbh, Munich, DE;
GIESECKE+DEVRIENT CURRENCY TECHNOLOGY GMBH, Munich, DE;
Abstract
A method is provided for producing a green paper for producing a gas diffusion layer (GDL) for a fuel cell. A use is described of an accordingly produced gas diffusion layer (GDL) in a fuel cell. A first paper web is loaded with metal powder and/or metal fibers, and a microporous layer (MPL) is in the form of at least one coating is applied onto the paper web. The paper web is then subjected to a binder removal process, a sintering process, a coating process, atomic layer deposition (ALD) using thermal ALD methods, and optionally additional process steps in order to obtain the final GDL. After the sintering process, all of the organic components of the green paper are pyrolyzed and thus no longer contained in the GDL, and the GDL consists virtually exclusively of a metal framework.