Electrochemical structure
CA 2414356 A1 · Owner: Ralph, Thomas Robertson · Inventors: Gascoyne, John Malcom; Ralph, Thomas Robertson; Hards, Graham Alan
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A novel anode structure for making a proton exchange membrane fuel cell (PEMFC) tolerant to incidences of cell reversal said anode structure , comprising an electrocatalyst layer wherein said electrocatalyst layer comprises at least one electrocatalyst and at least one proton conducting polymer, characterised in that one or more water retaining material(s) are embedded within the electrocatalyst layer and a process for the preparation , thereof is disclosed. Also disclosed is a novel electrocatalyst ink for use in the preparation of the novel anode structure.
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 June 20, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 20, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 20, 2023.
- 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.