Fuel cell stack
CA 2429595 A1 · Owner: Dohle, Hendrik · Inventors: Wegner, Richard; Dohle, Hendrik; Bewer, Thomas
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a fuel cell stack whereby a regulation of the , operational medium concentration may be effected by simple means. It is thus possible to automatically operate the fuel cell stack almost optimally which , means just above the minimum necessary operating medium concentration for operation, dependant upon the load. The invention is based upon the effect that an individual fuel cell under identical operating conditions produces a lesser cell voltage. The above is used as the adjustment parameter for the controlled addition of at least one operating medium for example methanol or , also air. According o the invention the fuel cell stack can thus be operated with …
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 November 21, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 21, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 21, 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.