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. 05, 2002
Filed:
Jul. 28, 1999
Arthur Koschany, Pocking, DE;
Thomas Schwesinger, Kirchroth, DE;
Proton Motor Fuel Cell GmbH, Starnberg, DE;
Abstract
A membrane-electrode unit ( ) with integrated sealing edge for a polymer electrolyte membrane fuel cell having a polymer electrolyte membrane ( ), an anode ( ) arranged on one surface of the membrane and a cathode ( ) arranged on the other surface of the membrane, is made from a layer material of anode material, cathode material and polymer electrolyte membrane material disposed therebetween, from which pieces of suitable size are severed, with the membrane, in the severed pieces, being covered completely by the electrodes on both of its sides. On the periphery of said piece, a sealing edge ( ) is formed such that the sealing edge ( ) penetrates an edge portion ( ) of at least one of the electrodes ( ) and adheres to the membrane portion adjacent the edge potion and/or the sealing edge adheres to the end faces of at least one of the electrodes and the end faces of the membrane.