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Expired Canadian patentCanada

Industrial fabrics

CA 1251697 A · Owner: Scapa-Porritt Limited · Inventors: Myerscough, Paul F.; Gisbourne, Bryan J.

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

An industrial fabric and particularly a papermakers, dryer fabric is proposed wherein the permeability thereof is reduced by the inclusion of a continuous layer of an elastomeric open-cell foam therein which extends to and is contiguous with at least one surface of the base structure the base structure, comprising a link belt or a woven or knitted fabric.

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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 March 28, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 28, 2006.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 18, 1984
GrantedMarch 28, 1989
Term endedMarch 28, 2006
Patent numberCA 1251697 A
Classification (IPC)D06N3/00 +2 more

Timeline

Timeline From CIPO dates

19851988199119941997200020032006Application filedOct 18, 1984Patent grantedMarch 28, 1989Term endedMarch 28, 2006

Sources & verification

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