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Expired Canadian patentCanada

Differential pressure controlling method for plate reformer of fuel cell power generation system

CA 2123830 C · Owner: Ishikawajima-Harima Heavy Industries Co. Ltd. · Inventors: Hatori, Satoshi; Uematsu, Hiroyoshi; Morimoto, Hiromasa

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Abstract From the Canadian patent

The method controls a differential pressure of a plate reformer installed in a fuel cell power generation system. In the power generation system a raw material gas is reformed to a fuel gas in the plate reformer the fuel gas is fed to an anode of a fuel cell an anode exhaust gas from the anode is fed to a combustion chamber of the plate reformer a combustion exhaust gas from the combustion chamber is fed to a cathode of the fuel cell together with an air and part of the air is fed to the combustion chamber. The method includes the steps of placing the plate reformer in a pressure vessel maintaining a pressure of a cathode exhaust gas to a constant value feeding part of the air to be fed to …

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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 May 18, 1994 and granted August 20, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 18, 2014.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 18, 2016.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 18, 1994
GrantedAugust 20, 2002
Term endedMay 18, 2014
Patent numberCA 2123830 C
Classification (IPC)—

Timeline

Timeline From CIPO dates

1995199719992001200320052007200920112013Application filedMay 18, 1994Patent grantedAug 20, 2002Term endedMay 18, 2014

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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.