Fuel cell, polyelectrolyte and ion-exchange resin used for same
CA 2373212 A1 · Owner: Morishima, Makoto · Inventors: Yamaga, Kenji; Kobayashi, Toshiyuki; Koyama, Tohru
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The object of this invention is to provide a solid polymer electrolyte which is excellent in durability and of low cost, and membranes solutions, for electrode catalyst coating membrane/electrode, assemblies and fuel cells which use the electrolyte. According to this invention there can be provided a, fuel cell which comprises an electrode assembly having an electrode catalyst membrane formed therein said, catalyst membrane comprising a polymer electrolyte membrane held between an anode on one side of the principal plane of the electrolyte membrane and a cathode on the other side of the principal lane thereof, current collecting plates provided each independently in close contact, to the …
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 February 25, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 25, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 25, 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.