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Expired Canadian patentCanada

A device for burning gas from a production plant for oil or gas

CA 2201517 C · Owner: Hystad, Harald (Deceased) · Inventors: Hystad, Harald (Deceased)

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

A device for burning gas from a production plant for oil/gas comprising a burner at the top of a flare pipe (8). The production plant is connected to the flare pipe (8) through a low pressure collection line (1) for process gas. One has aimed at reducing combustion of valuable production gas to a minimum. To this end, the collection line (1) is connected to an expansion tank (2) having a return line (4) to the production plant and downstream relative to , the expansion tank (2) a liquid trap (6) has been disposed.

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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 2, 1995 and granted July 25, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 2, 2015.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 2, 2017.
  • 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 2, 1995
GrantedJuly 25, 2000
Term endedOctober 2, 2015
Patent numberCA 2201517 C
Classification (IPC)F23G7/08 +1 more

Timeline

Timeline From CIPO dates

1996199820002002200420062008201020122014Application filedOct 2, 1995Patent grantedJuly 25, 2000Term endedOct 2, 2015

Sources & verification

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