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:
Jan. 27, 2026
Filed:
Jan. 14, 2020
Paul Scherrer Institut, Villigen PSI, CH;
Felix Buechi, Langenthal, CH;
Tobias Schuler, Turgi, CH;
Paul Scherrer Institut, Villigen PSI, CH;
Abstract
A porous transport layer has a plurality of sintered porous layers with a permeability for gaseous and liquid substances. The multilayer porous transport layer is assembled between a bipolar plate and a catalyst layer of an electrochemical cell. A first and second porous layer have irregularly shaped particles of a conductive material. The mean particle size decreases from layer to layer from the bipolar plate towards the catalyst layer, and the irregularly shape particles are defined by having an irregularity parameter IP=D/d smaller than 5 and a roundness RN=P2/4πA greater than 1.2. D is the diameter of the smallest possible circle surrounding a 2D projection of the particle; d is the diameter of the biggest possible circle laying completely inside the 2D projection of the particle; P is the perimeter of the 2D projection of the particle; and A is the area of the 2D projection of the particle.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile