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:
Oct. 01, 2013
Filed:
Mar. 22, 2011
Jeffrey A. Rock, Fairport, NY (US);
Jeff D. Williams, Tonawanda, NY (US);
Alan J. Jacobsen, Woodland Hills, CA (US);
Peter D. Brewer, Westlake Village, CA (US);
William B. Carter, Calabasas, CA (US);
Jeffrey A. Rock, Fairport, NY (US);
Jeff D. Williams, Tonawanda, NY (US);
Alan J. Jacobsen, Woodland Hills, CA (US);
Peter D. Brewer, Westlake Village, CA (US);
William B. Carter, Calabasas, CA (US);
GM Global Technology Operations LLC, Detroit, MI (US);
HRL Laboratories, LLC, Malibu, CA (US);
Abstract
A method for fabricating a flowfield for a fuel cell includes the steps of: providing a substrate; providing a plurality of radiation sources configured to generate a plurality of radiation beams; disposing a radiation-sensitive material on the substrate; placing an imaging mask between the plurality of radiation sources and the radiation-sensitive material; and exposing the radiation-sensitive material to the plurality of radiation beams through a first portion of the radiation-transparent apertures and a second portion of the radiation-transparent apertures in the imaging mask to form the plurality of truss elements and the plurality of wall elements in the radiation-sensitive material, the truss elements forming a plurality of trusses configured to support an adjacent diffusion medium layer, and the wall elements defining a fluid path along a length of the substrate.