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Canadian application, no grantCanada

Porous silicon and sol-gel derived electrode structures and assemblies adapted for use with fuel cell systems

CA 2444688 A1 · Owner: Neah Power Systems, Inc. · Inventors: Rice, Gordon L.; Ohlsen, Leroy J.; Chan, Chung M.

CIPO record

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Abstract From the Canadian patent

Fuel cell systems, electrode assemblies and electrode structure are disclosed herein. In one embodiment, the present invention is directed to an electrode assembly adapted for use with a fuel cell system comprising: an anode derived , from a first silicon substrate (with an optional sol-gel region); an electrolyte; and a cathode derived from a second silicon substrate (with an optional sol-gel region); wherein the anode and the cathode are spaced apart and substantially parallel to each other so as to define a spaced apart region, and wherein the electrolyte is interposed between the anode and the cathode, and wherein at least (i) the anode comprises one or more discrete anodic …

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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 April 19, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 19, 2022.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 19, 2024.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 19, 2002
GrantedNo grant recorded
Term endedApril 19, 2022
Patent numberCA 2444688 A1
Classification (IPC)H01M4/86 +2 more

Timeline

Timeline From CIPO dates

2003200520072009201120132015201720192021Application filedApril 19, 2002Term endedApril 19, 2022

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