Hydrogen removal system for metal/air fuel cell
CA 2120775 C · Owner: Alcan International Limited · Inventors: Lapp, Steven P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A metal/air fuel cell is described in which hydrogen is effectively removed from a cell stack and electrolyte storage tank without emitting caustic vapour or mist. The fuel cell comprises: (a) a fuel cell assembly housing, (b) a plurality of metal/air cells disposed in the housing, (c) an electrolyte storage tank (d) a recirculation , loop for continuously recirculating electrolyte from the storage tank through the metal/air cells (e) air injection means for flowing , air between the metal/air cells (f) a degassing vessel, connected to the recirculating loop to receive electrolyte containing hydrogen gas from the metal/air cells, the vessel being arranged to discharge hydrogen gas …
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 September 29, 1992 and granted March 18, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 29, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 29, 2014.
- 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.