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Expired Canadian patentCanada

Thermoplastic strap weld with encapsulated cavities

CA 1269031 C · Owner: Signode Corporation · Inventors: Cheung, Nelson

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 improved welded joint is provided for use with overlapping strap portions. Parts of the thickness of each strap portion are merged together to define a continuous joint region. The joint region further includes a plurality of encapsulated cavities distributed at least in the end portions of the joint region.

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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 May 15, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 15, 2007.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 25, 1987
GrantedMay 15, 1990
Term endedMay 15, 2007
Patent numberCA 1269031 C
Classification (IPC)B29C65/02 +2 more

Timeline

Timeline From CIPO dates

1988199019921994199619982000200220042006Application filedMay 25, 1987Patent grantedMay 15, 1990Term endedMay 15, 2007

Sources & verification

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