Fuel cell separator plate providing interconnection of reactant gas flowpaths in fuel cell stacks
CA 2336085 A1 · Owner: Ballard Power Systems Inc. · Inventors: Mclean, Gerard F.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A separator plate (10) is provided for use in a fuel cell stack having a fuel , gas flow field (21) adjacent one surface and an oxidant gas flow field adjacent the other surface. The fuel cells in the stack are advantageously PEMtype fuel cells having undulate membrane electrode assemblies. The flowpaths of the flow fields comprise parallel flow channels extending longitudinally and interconnected at their ends to form the flowpaths. The interconnections are formed by an array of spaced interconnection couplings (12 14), that may , be depressed cavities in the separator plates. The couplings for the oxidant gas flow channels are offset from those for the fuel flow channels. The …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed July 1, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 1, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 1, 2021.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
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Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.