Fuel cell having metalized gas diffusion layer
CA 2471761 A1 · Owner: Bai, Lijun · Inventors: Bai, Lijun; Lloyd, Greg A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A fuel cell (10) is described and which includes an ion exchange membrane (12); an electrode (13, 14) positioned in ion exchanging relation relative to the ion exchange membrane; a gas diffusion layer (50) borne by the electrode and having an outwardly facing surface; a porous metal coating (60) comprising one or more elements selected from the periodic table of elements and which has an atomic number of less than 75, and which is positioned at least in partial covering relation relative to the outwardly facing surface of the gas diffusion layer; and a current collector (80) forcibly disposed in ohmic electrical contact with the porous metal coating.
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 December 6, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 6, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 6, 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.