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Expired Canadian patentCanada

Supplying heat to an externally fired power system

CA 2188223 C · Owner: Mirolli, Mark D. · Inventors: Kalina, Alexander I.; Mirolli, Mark D.

CIPO record

Overview

Drawings and full text

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

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Abstract From the Canadian patent

Apparatus and method for supplying heat to an externally fired power system by using a multistage system having two or more combustion zones. Each combustion zone has an associated heat exchanger that conveys a respective working fluid stream from the externally fired power system. Each combustion zone receives a portion of the total amount of combustion fuel, and the amount of fuel and air supplied to each combustion zone is adjusted to control the temperature to a predetermined value.

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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 October 18, 1996 and granted April 18, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 18, 2016.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 18, 2018.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 18, 1996
GrantedApril 18, 2000
Term endedOctober 18, 2016
Patent numberCA 2188223 C
Classification (IPC)F23C6/00 +2 more

Timeline

Timeline From CIPO dates

1997199920012003200520072009201120132015Application filedOct 18, 1996Patent grantedApril 18, 2000Term endedOct 18, 2016

Sources & verification

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