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. 30, 2009
Filed:
Jun. 22, 2006
David Allen Wald, Lakeland, MN (US);
Jimmy Minh Le, Saint Paul, MN (US);
Michael Andrew Yandrasits, Hastings, MN (US);
Paul Michael Boucher, Saint Paul, MN (US);
David Allen Wald, Lakeland, MN (US);
Jimmy Minh Le, Saint Paul, MN (US);
Michael Andrew Yandrasits, Hastings, MN (US);
Paul Michael Boucher, Saint Paul, MN (US);
3M Innovative Properties Company, Saint Paul, MN (US);
Abstract
The present invention provides a method of making a gasketed fuel cell membrane electrode assembly by simultaneously binding together the parts of the MEA, impregnating uncured elastomeric gasket material into the outer edge portions of each fluid transport layer, and substantially curing the uncured elastomeric gasket material so as to form anode-side and cathode-side gaskets. In order to form a raised-ridge microstructured contact pattern on the contact face of each gasket, patterning plates bearing a negative relief of a raised-ridge microstructured contact pattern may be positioned between the press platens and the uncured elastomeric gasket material.