Membrane electrode assembly for a fuel cell and a method for producing the same
CA 2395542 A1 · Owner: Waidhas, Manfred · Inventors: Gebhardt, Ulrich; Mehltretter, Igor; Waidhas, Manfred
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a membrane electrode assembly for a fuel cell in , particular a PEM fuel cell and to a method for producing the same. According to said method, the expensive precious metal (3) is distributed asymmetrically over the membrane (1) according to the requirements of each area. The production method is characterised in that the electrodes are first coated with the membrane and not vice versa.
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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 December 22, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 22, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 22, 2022.
- 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.