Method for operating a fuel cell on carbon monoxide containing fuel gas
CA 1305212 C · Owner: Ballard Technologies Corporation · Inventors: Dircks, Kenneth W.; Epp, Danny; Watkins, David S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention disclosed relates to a method for operating a low-temperature fuel cell on a fuel gas mixture containing carbon monoxide. The gas mixture is mixed with an oxygen-containing gas, such as air, in a molar ratio of oxygen to carbon monoxide of about 0.5 to 3:1. The resulting gas mixture is then contacted with a catalyst, such as platinum at a reaction, temperature of about 10 to 160°C and pressure of about atmospheric to 500 psig. Under these conditions selective oxidation of the carbon monoxide occurs. This novel method permits the use of carbon monoxide-containing fuel gases in low temperature fuel cells employing platinum group metal electrodes without poisoning the electrodes.
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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
- Granted July 14, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 14, 2009.
- 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.