Process for flushing the gas circuit of a fuel cell, and apparatus for practicing the process
CA 2293898 A1 · Owner: L'Air Liquide Societe Anonyme A Directoire Et Conseil De Surveillance Pour L'Etude Et L'Exploitation Des Procedes Georges Claude · Inventors: Charlat, Pierre
Overview
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 process for purging the gas circuits of fuel cells, adapted to evacuate from these circuits, the water in liquid phase which may be there, as well as if desired the unusable gases or the like that the circuit is adapted to channel for example nitrogen in circuits adapted for the circulation of hydrogen of air-hydrogen cells; it also relates to a device for practicing this process.
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 4, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 4, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 4, 2022.
- 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.