Expired Canadian patentCanada
Fuel cell cathodes
CA 2597997 C · Owner: Ceres Intellectual Property Company Limited · Inventors: Kilner, John; Mccolm, Tom; Lewis, Gene
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a method of producing a fuel cell cathode fuel cell cathodes, and fuel cells comprising same.
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 25, 2006 and granted June 25, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 25, 2026.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 25, 2006
GrantedJune 25, 2013
Term endedJanuary 25, 2026
Patent numberCA 2597997 C
Classification (IPC)H01M4/86 +1 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.