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Expired Canadian patentCanada

Modular building construction

CA 1269509 C · Owner: Structural Design Services · Inventors: Watson, John

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

A metallic floor panel having top sides and, ends with the sides being longer than or equal in length to the ends. The panel has a flat upper surface. End channels are attached to the upper surface at each end and side channels are attached to the upper surface at each side. The side channels extend further from the upper surface than the end channels. Major ribs generally parallel to the ends of the panel extend the width of the panel. Minor ribs are arranged between the major ribs and between the major ribs and the end channels. The end channels have lower surfaces generally parallel to the top surface to enable mounting of the panel to a main beam of a building. -8-

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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 29, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 29, 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 5, 1986
GrantedMay 29, 1990
Term endedMay 29, 2007
Patent numberCA 1269509 C
Classification (IPC)E04C2/38 +2 more

Timeline

Timeline From CIPO dates

1987199019931996199920022005Application filedMay 5, 1986Patent grantedMay 29, 1990Term endedMay 29, 2007

Sources & verification

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