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Expired Canadian patentCanada

Process to manufacture a pressure panel heated by a fluid medium

CA 1289554 C · Owner: Sandten, Herbert · Inventors: Averdick, Gunter; Sandten, Herbert

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

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Abstract From the Canadian patent

A process for manufacturing a press platen that is heated by a fluid medium, said platen being of the kind or type used in platen presses in the production of chip-wood panels, fibre panels laminate panels, and the like. A plurality of parallel heating channels are bored in one direction of a steel platen, and the heating channels are connected to collector channels and/or return channels extending transverse to said heating channels this being done, with regard to a predetermined flow pattern for the fluid medium. Deflecting components are installed in the return channels and plugs are inserted in the face ends of the heating channels. The return channels or the collector channels are …

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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 September 24, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 24, 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.
FiledApril 9, 1987
GrantedSeptember 24, 1991
Term endedSeptember 24, 2008
Patent numberCA 1289554 C
Classification (IPC)B23P15/26 +2 more

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedApril 9, 1987Patent grantedSep 24, 1991Term endedSep 24, 2008

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