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Expired Canadian patentCanada

Heavy oil emulsified fuel combustion equipment

CA 2182066 C · Owner: Kaneko, Shozo · Inventors: Hashimoto, Tsutomu; Hiraki, Akio; Kaneko, Shozo

CIPO record

Overview

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

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Abstract From the Canadian patent

Object: To provide a heavy oil emulsified fuel combustion furnace which prevents lowering of combustion efficiency due to water content in the fuel as well as prevents elevation of sulfuric acid dew point due to water content in the flue gas of combustion furnace. Solving means: Heavy oil emulsified fuel 102 is heated by a heater 110 using a heat pipe etc. and then is separated by a water vaporizer 120 to heavy oil content 122 and vapor 121 consisting of steam and a light oil combustible gas. The heavy oil content 122 is supplied to a burner port of the combustion furnace such as a boiler etc. The vapor 121 is condensed by a condenser 140 to become liquid 141 in which water content and a …

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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 July 25, 1996 and granted October 26, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 25, 2016.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 25, 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.
FiledJuly 25, 1996
GrantedOctober 26, 1999
Term endedJuly 25, 2016
Patent numberCA 2182066 C
Classification (IPC)F23Q7/08 +2 more

Timeline

Timeline From CIPO dates

1997199920012003200520072009201120132015Application filedJuly 25, 1996Patent grantedOct 26, 1999Term endedJuly 25, 2016

Sources & verification

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