High-efficiency fuel cell power system with power generating expander
CA 2518752 C · Owner: Nuvera Fuel Cells, Inc. · Inventors: O'Brien, Christopher J.; Clawson, Lawrence G.; Hagan, Mark R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A hydrogen fuel cell power system having improved efficiency comprises a fuel cell (14), a source of hydrogen gas (14) a compressor (64) for creating a , pressurized air stream and a liquid supply which is heated by waste heat from the power system and evaporates into the pressurized air stream (70) to produce a pressurized air and steam mixture. The pressurized air/steam mixture (70), which is preferably used as the oxidant in the fuel cell is combusted , with the fuel in a burner (12) to produce a high-temperature steam-laden exhaust stream (30). The high-temperature steam-laden exhaust stream (30) drives an expander (32) to produce a power output. The evaporation of liquid can …
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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 December 31, 2003 and granted April 23, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 31, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 31, 2025.
- 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.