Canadian application, no grantCanada
A structurally yieldable full cell seal
CA 2454710 A1 · Owner: Field, Marshall · Inventors: Field, Marshall; Champion, David; Beatty, Christopher
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A seal for a fuel cell includes an alloy configured to absorb thermal and redox stresses transferred to the fuel cell by becoming structurally yieldable at, operating temperatures of the fuel cell.
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 December 31, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 31, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 31, 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.
FiledDecember 31, 2003
GrantedNo grant recorded
Term endedDecember 31, 2023
Patent numberCA 2454710 A1
Classification (IPC)H01M2/08 +2 more
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.