Pem fuel cell and method for operating a pem fuel cell system with liquid wetting and/or cooling
CA 2331713 A1 · Owner: Siemens Aktiengesellschaft · Inventors: Luft, Gunter; Mund, Konrad; Genenger, Bernd
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 PEM (polymer electrolyte membrane) fuel cell (BZ) with a novel humidification and cooling system. The inventive fuel cell consists of a membrane-electrode unit (ME) and at least one separator with structured channels. A liquid or a foam is added to the stream of fuel and/or the stream of oxidant for humidification and/or cooling.
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 May 3, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 3, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 3, 2021.
- 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.