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Expired Canadian patentCanada

Method of and plant for the manufacture of wood chipboards and similar board materials

CA 1305649 C · Owner: Heimes, Bernd · Inventors: Ahrweiler, Karl-Heinz; Heimes, Bernd

CIPO record

Overview

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

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Abstract From the Canadian patent

In A double-belt press for the manufacture of wood chip boards and the like, for the production of boards having a width (38) less than the nominal working width (34), the forming belts are held in contact with the support structure (17, 18) so as to guarantee heat transfer in the edge zone (35) extending outside the edge (32) of the filling (33) which produces the boards to the vicinity of the edge (31) of the pressing zone there, an edge filling (36) of particles free from binder being Jointly pressed there or a compressible belt being made to co-rotate. (Fig. 5).

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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 July 28, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 28, 2009.
  • 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 16, 1988
GrantedJuly 28, 1992
Term endedJuly 28, 2009
Patent numberCA 1305649 C
Classification (IPC)B27N3/24 +2 more

Timeline

Timeline From CIPO dates

1989199219951998200120042007Application filedFeb 16, 1988Patent grantedJuly 28, 1992Term endedJuly 28, 2009

Sources & verification

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