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Expired Canadian patentCanada

Steel cord reinforced plastic materials

CA 1075577 A · Owner: N.V. Bekaert S.A. · Inventors: Coopman, Frans; Verbauwhede, Germain

CIPO record

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Drawings and full text

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

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Abstract From the Canadian patent

The invention is a reinforced plastic article and a process of manufacturing the same. The article comprises at least one layer of a combination of glass fibres and steel cord. The process comprises advancing a set of resin impregnated glass fibre rovings and a set of steel cords to a guiding system which is mounted in the vicinity of a mandrel and movable axially along the mandrel. The fibres and cords are brought into mutual longitudinal contact by the guiding system and the parallel fibres and cords are guided as a layer onto the mandrel surface so as to arrange and embed each cord in a fibre roving. The resulting reinforced plastic articles have improved mechanical properties such as …

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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 15, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 15, 1997.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedApril 15, 1980
Term endedApril 15, 1997
Patent numberCA 1075577 A
Classification (IPC)B29D23/00 +2 more

Timeline

Timeline From CIPO dates

198119831985198719891991199319951997Patent grantedApril 15, 1980Term endedApril 15, 1997

Sources & verification

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