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Expired Canadian patentCanada

Method and apparatus for flaring combustible waste gases

CA 1054508 A · Owner: Lapp, Ken O. · Inventors: Lapp, Ken O.

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Abstract From the Canadian patent

In a system for burning waste gas including a vertical flare stack, a pilot burner having a continuous flame nozzle in close proximity to the discharge outlet of the stack and an elongated tube connecting the nozzle with a supply of combustible air/gas mixture at or near ground level, and a flame retention burner having a flame retention nozzle in close proximity to said continuous flame nozzle to a supply of combustible gas at or near ground level a method, for igniting the waste gas which is discharged from the stack comprising the steps: flowing a combustible gas through the flame retention burner; flowing a combustible air/gas mixture through the pilot burner; igniting the air/gas …

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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 May 15, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 15, 1996.
  • 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 14, 1975
GrantedMay 15, 1979
Term endedMay 15, 1996
Patent numberCA 1054508 A
Classification (IPC)—

Timeline

Timeline From CIPO dates

1976197919821985198819911994Application filedNov 14, 1975Patent grantedMay 15, 1979Term endedMay 15, 1996

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