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Expired Canadian patentCanada

Offshore platform structure for arctic waters

CA 1180908 A · Owner: Selmer (F.) A/S · Inventors: Einstabland, Tomas

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

An offshore concrete gravity platform structure to be installed on a sea bed in arctic waters, comprising a sub-structure completely submerged and supported by the sea bed when in an installed position a superstructure, extending up from the substructure and a deck superstructure supported by the superstructure above the sea water surface the substructure having a top, supporting a fender comprising a cylindrical ring-shaped body located at a radial distance from the super-structure The fender when in a ballasted condition rests on the substructure, to be displaced relative to the substructure and the superstructure when impacted by large iceberg masses in, order to protect the …

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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 January 15, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 15, 2002.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 1, 1982
GrantedJanuary 15, 1985
Term endedJanuary 15, 2002
Patent numberCA 1180908 A
Classification (IPC)B63B35/44

Timeline

Timeline From CIPO dates

1983198519871989199119931995199719992001Application filedMarch 1, 1982Patent grantedJan 15, 1985Term endedJan 15, 2002

Sources & verification

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