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Expired Canadian patentCanada

Powdered starting material for a nickel-based alloy for manufacturing a porous anode of a fuel cell, method producing such a material, method for manufacturing an anode for fuel cells, the anode obtained and also a fuel cell which contains such an anode

CA 2036549 C · Owner: Van Beijnen, Christianus Antonius Maria · Inventors: Van Der Molen, Sytze Bernhard; Van Beijnen, Christianus Antonius Maria

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Abstract From the Canadian patent

The invention provides a powdered starting material for a nickel-based alloy for manufacturing a porous anode of a fuel cell containing 0.5 to 10% by weight of aluminium titanium and/or, zirconium. The powder is manufactured using a mixture of carbonyl nickel powder and a powder of an intermetallic aluminium titanium, and/or zirconium compound having a particle size of 1 to 10 microns. The powder is produced by mixing the carbonyl nickel powder with an amount of an intermetallic compound such that 0.5 to 10% by weight of the desired element or elements is present in the anode material, the intermetallic compound having a particle size of 1 to 10 mm. An anode for a fuel cell can be produced …

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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 February 18, 1991 and granted September 29, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 18, 2011.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 18, 2013.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledFebruary 18, 1991
GrantedSeptember 29, 1998
Term endedFebruary 18, 2011
Patent numberCA 2036549 C
Classification (IPC)C22C19/03 +2 more

Timeline

Timeline From CIPO dates

1992199419961998200020022004200620082010Application filedFeb 18, 1991Patent grantedSep 29, 1998Term endedFeb 18, 2011

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