Fuel cell powered by direct fuel
CA 2440964 C · Owner: Victrex Manufacturing Limited · Inventors: Andrews, Mark James; Lockley, John Edward; Wilson, Brian
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A fuel cell powered by direct fuel, for example a direct methanol fuel cell includes a polymer electrolyte membrane which includes a semi-crystalline polymer. Preferred semi-crystalline polymers include first repeat units comprising sulphonated aromatic group containing moieties linked by -SO2- and/or -CO- and/or -Q-groups, where Q is O or S and second repeat units which include aromatic group containing moieties linked by -CO- and/or Q groups.
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 21, 2002 and granted February 15, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 21, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 21, 2024.
- 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.