Proton conducting polymer membrane for electrochemical cell
CA 2403128 A1 · Owner: Gascoyne, John Malcolm · Inventors: Ralph, Thomas Robinson; Gascoyne, John Malcolm; 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 proton conducting polymer membrane which contains a network of voids within the membrane is disclosed. Such a membrane allows for a reservoir of additional water within a fuel cell comprising said membrane such that water , electrolysis is sustained in the cell during incidences of cell reversal. Methods for the construction of such a membrane are also provided.
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 March 16, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 16, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 16, 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.