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Expired Canadian patentCanada

Lagging-reinforced structure

CA 1267862 C · Owner: Kawamoto, Masaichi · Inventors: Kawamoto, Masaichi

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

The present invention discloses a lagging-reinforced structure which comprises a substrate, a lining layer of a flexible and resilient material coated on the upper surface of the substrate a plurality of laggings embedded in the lining the laggings, having an anchoring portion at the embedded end thereof and, the laggings made of a material of high hardness and high wear resistance. Due to such construction, the peeling-off of the lagging from the lining layer can be effectively prevented.

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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 17, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 17, 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.
FiledApril 7, 1986
GrantedApril 17, 1990
Term endedApril 17, 2007
Patent numberCA 1267862 C
Classification (IPC)B65G15/30

Timeline

Timeline From CIPO dates

1987199019931996199920022005Application filedApril 7, 1986Patent grantedApril 17, 1990Term endedApril 17, 2007

Sources & verification

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