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Expired Canadian patentCanada

Process for calcining coke

CA 1137017 A · Owner: Koa Oil Company, Limited · Inventors: Komi, Nobuyuki; Noguchi, Kosaku

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Abstract From the Canadian patent

A process for calcining green coke obtained by a delayed coking process in at least three stages of heating furnaces which are connected in series and the control of the temperature and the adjustment of the atmosphere in each furnace can be independently. carried out which process comprises carrying out, in the respective furnaces in the indicated order,the steps of :, a) evaporating the water contained in the green coke, and drying and preheating the coke; b) distilling off the volatile matter from the dried coke, and preliminarily calcining the coke; and c) burning the volatile matter from the step b), and calcining the coke, the coke from the step b) after being once cooled, be-, ing …

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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 December 7, 1982. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 7, 1999.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 3, 1979
GrantedDecember 7, 1982
Term endedDecember 7, 1999
Patent numberCA 1137017 A
Classification (IPC)C10B57/02 +1 more

Timeline

Timeline From CIPO dates

1980198219841986198819901992199419961998Application filedAug 3, 1979Patent grantedDec 7, 1982Term endedDec 7, 1999

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