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Expired Canadian patentCanada

Apparatus and method to control process to replace natural gas with fuel oil in a natural gas burner

CA 1083470 A · Owner: Allied Chemical Corporation · Inventors: Johnson, Edward R.; Jackson, John M.; Hoehing, William W.

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Abstract From the Canadian patent

An apparatus and method to control a process to replace natural gas with vaporized fuel oil whereby fuel oil is mixed with a gaseous diluent and partially vaporized, liquids separated out super-, heated and burned in a natural gas burner without major modification to the burner is disclosed. The control system is:, (1) a liquid level controller sensing the liquid level in the separator to automatically control the flow of the fuel oil to the vaporizer, (2) a ratio flow controller sensing the flow of the fuel oil and of the diluent to the vaporizer to automatically control the flow of the diluent to a set ratio of the flow of the fuel oil, (3) a pressure controller sensing the pressure at …

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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

  • Granted August 12, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 12, 1997.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 12, 1978
GrantedAugust 12, 1980
Term endedAugust 12, 1997
Patent numberCA 1083470 A
Classification (IPC)F23D11/44 +2 more

Timeline

Timeline From CIPO dates

1979198119831985198719891991199319951997Application filedJan 12, 1978Patent grantedAug 12, 1980Term endedAug 12, 1997

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