Separator for solid polymer electrolytic fuel battery
CA 2361325 A1 · Owner: Oda, Kazuhiko · Inventors: Matsui, Yasuyuki; Tsujioka, Masanori; Oda, Kazuhiko
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A separator for a solid polymer electrolyte type fuel cell wherein multipile single cells are laminated and made up of a solid polymer electrolyte layer and catalyst electrode layers gas diffusion electrodes and, separators disposed on either side of the solid polymer electrolyte layer and, a fuel cell using the separator. At least a part of the separator to make contact with a gas diffusion layer is coated with a coating layer including a conducting hard carbon film. As a result the separator has superior, corrosion resistance and the fuel cell has a minimal internal resistance.
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 July 13, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 13, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 13, 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.