Fuel cell electrocatalyst and method of producing the same
CA 2444176 A1 · Owner: Toyota Jidosha Kabushiki Kaisha · Inventors: Kato, Hisao
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In an aspect of the invention, a fuel cell electrocatalyst comprises a carrier and, a catalyst layer made of a Pt-Ru alloy supported on the carrier and having , the oxygen, content of 4.4 wt% or less. Moreover a value of the amount of oxygen that , exists in one layer of the outermost surface of a component atom of the catalyst layer is 14.1%, or less. Furthermore, in another aspect of the invention a method of , producing the, fuel cell electrocatalyst comprises a supporting step of supporting a catalyst layer, made of an alloy including Pt and Ru on a carrier and an oxygen content , regulating, step of regulating the oxygen content of the catalyst layer.
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 October 1, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 1, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 1, 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.