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Expired Canadian patentCanada

Joining structure in a laminate comprising a local reinforcement

CA 2541820 C · Owner: Ter Steeg, Willem Jan Nicolaas · Inventors: Rajabali, Faziel Abdoel; Ter Steeg, Willem Jan Nicolaas

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

A joining structure in a laminate comprises metal layers as well as at least one adhesive layer which is enclosed by the metal layers which metal layers , each comprise separate metal-layer parts having a pair of overlapping edges which pairs of edges are offset with respect to each other and together define a joining region. The laminate comprises a section which is of standard construction and a section which contains an additional internal reinforcing , metal layer, said reinforcing metal layer comprising two reinforcing metallayers parts with a pair of overlapping edges said pair of edges being , located outside the joining 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

  • Filed October 5, 2004 and granted December 4, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 5, 2024.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 5, 2026.
  • 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 5, 2004
GrantedDecember 4, 2012
Term endedOctober 5, 2024
Patent numberCA 2541820 C
Classification (IPC)B29C70/88 +2 more

Timeline

Timeline From CIPO dates

2005200720092011201320152017201920212023Application filedOct 5, 2004Patent grantedDec 4, 2012Term endedOct 5, 2024

Sources & verification

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