Bipolar plate with metal core and corrosion-resistant layer for pem fuel cells
CA 2506776 A1 · Owner: Tawfik, Hazem · Inventors: Tawfik, Hazem; Hung, Yue
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A bipolar plate (10) has a multi-layered structure including an inner metallic layer (12) and at least one outer metallic corrosion-resistant layer 14 , splatted embedded, diffused and interlocked into the inner metallic layer. The corrosion-resistant layer (14) is deposited by thermal spray techinques such as high velocity oxygen fuel (HVOF) technology. Said layer is composed of nickel-based alloys, chromium-based alloys carbide-based alloys or , combinations thereof whereas the inner metalic layer comprises stainless steel, aluminum, zinc, magnesium, the corresponding alloys and combinations thereof.
Read the whole patent
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 November 24, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 24, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 24, 2025.
- 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.