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Expired Canadian patentCanada

Coke oven battery adapted for regenerative heating with lean gas

CA 1052314 A · Owner: Dr. C. Otto And Comp. Gesellschaft Mit Beschrankter Haftung · Inventors: Pries, Erich

CIPO record

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

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Abstract From the Canadian patent

This invention relates to a coke oven battery which is regeneratively heated with lean gas and which is provided with heating chambers disposed between the ovens. The battery is provided with vertical flues which carry upgoing and downgoing heating flues and the battery is further provided with supply ports with vertically graded exits for lean gas and air disposed in header walls. The header walls comprise air supply means alternating along the row of heating flues and having lean gas supply means. In accordance with the invention the cross-section of, the exit ports are graded so that they increase upwardly in the case of air exits and downwardly in the case of lean gas exits. The grading …

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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 April 10, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 10, 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.
Filed—
GrantedApril 10, 1979
Term endedApril 10, 1996
Patent numberCA 1052314 A
Classification (IPC)C10B5/12 +2 more

Timeline

Timeline From CIPO dates

198019821984198619881990199219941996Patent grantedApril 10, 1979Term endedApril 10, 1996

Sources & verification

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