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Expired Canadian patentCanada

Output limiting device for fuel cell

CA 2587541 C · Owner: Nissan Motor Co. Ltd. · Inventors: Suzuki, Keisuke; Taniguchi, Ikuhiro

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

An output limiting device for a fuel cell including: an inlet coolant , temperature sensor detecting an inlet coolant temperature at a coolant inlet of the fuel cell; an outlet coolant temperature sensor detecting an outlet coolant temperature at a coolant outlet of the fuel cell; and an output limiter limiting power or current extracted from the fuel cell according to the detected inlet coolant temperature and the detected outlet coolant temperature.

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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 November 9, 2005 and granted January 3, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 9, 2025.
  • Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 9, 2005
GrantedJanuary 3, 2012
Term endedNovember 9, 2025
Patent numberCA 2587541 C
Classification (IPC)—

Timeline

Timeline From CIPO dates

2006200820102012201420162018202020222024Application filedNov 9, 2005Patent grantedJan 3, 2012Term endedNov 9, 2025

Sources & verification

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