Bipolar plate for fuel cell and method for manufacturing same
CA 2460841 A1 · Owner: Furuya Metal Co. Ltd. · Inventors: Shimamune, Takayuki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A bipolar plate for a fuel cell having a metal substrate and formed at least , a part of the surface thereof a metal-containing coating, characterized in that the metal substrate is formed with one or more metals or metal alloys selected from the group consisting of iron nickel, an alloy thereof and , stainless steel and the coating comprises a coating of an electroconductive oxide of a platinum Group metal, or in that the metal substrate has a surface being oxidized through heating and the coating comprises an electroconductive oxide, or in that the coating comprises a porous metal material preferably having a preventive layer against passivation formed thereon.
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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 September 11, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 11, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 11, 2024.
- 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
Timeline From CIPO dates
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.