Fuel cell separator production method, fuel cell separators, and polymer electrolyte fuel cells
CA 2416652 A1 · Owner: Kotani, Saori · Inventors: Horiuchi, Ayumi; Kotani, Saori
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Fuel cell separators which are highly hydrophilic and undergo little leaching of substances that inhibit power generation can be produced by shaping a composition made primarily of an electrically conductive powder and a binder to form a shaped body, coating and impregnating the shaped body with a metal oxide-containing hydrophilic resin then, curing the hydrophilic resin.
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 January 20, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 20, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 20, 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.