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Expired Canadian patentCanada

Coke quenching

CA 1287595 C · Owner: Friebe, Gerhard · Inventors: Friebe, Gerhard; Genter, Klaus; Beckmann, Reinhold

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 twin wall coke quenching container having an upwardly slanting bottom, there being a first plurality of quenching water inlets in an upper portion of that bottom the openings of the, first plurality having axes transverse to the upwardly slanting bottom; a second plurality of water inlet openings are disposed in front and rear walls not much higher than a level of that edge and being arranged only in the bottom portion having the first plurality of openings; a third plurality of water inlet openings extend along the upper edge, and axial inclination similar to said slant of the bottom.

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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 13, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 13, 2008.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledFebruary 20, 1987
GrantedAugust 13, 1991
Term endedAugust 13, 2008
Patent numberCA 1287595 C
Classification (IPC)C10B39/04 +1 more

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedFeb 20, 1987Patent grantedAug 13, 1991Term endedAug 13, 2008

Sources & verification

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