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Expired Canadian patentCanada

Granular composite containing crimped fibers and plastic articles made therefrom

CA 1298950 C · Owner: Verhaeghe, Frans · Inventors: Verhaeghe, Frans; Adriaensen, Ludo

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

This granular composite is obtained by chopping granules from a composite strand which contains at least one bundle of gear crimped fibres embedded in a polymer. The fibres can have reinforcing or electrically conductive properties. The granular composite is mixed with another polymer granulate and softened whereby the fibres are dispersed in the polymer mass, which is then shaped for example by injection molding into plastic articles.

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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 21, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 21, 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.
FiledJanuary 26, 1988
GrantedApril 21, 1992
Term endedApril 21, 2009
Patent numberCA 1298950 C
Classification (IPC)C08J5/04 +2 more

Timeline

Timeline From CIPO dates

1989199219951998200120042007Application filedJan 26, 1988Patent grantedApril 21, 1992Term endedApril 21, 2009

Sources & verification

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