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Expired Canadian patentCanada

Molds for continuously casting steel

CA 1047732 A · Owner: Satosen Company Limited · Inventors: Tomono, Hiroshi; Kimura, Tomohiko; Sato, Takayuki

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

The invention provides a copper or copper alloy mould for continuously casting steel, the mould having a first layer formed on its interior surface and comprising nickel and/or cobalt and a second layer formed on the first layer and containing nickel and/or cobalt as a main component and phosphorus or boron.

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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 February 6, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 6, 1996.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedFebruary 6, 1979
Term endedFebruary 6, 1996
Patent numberCA 1047732 A
Classification (IPC)B22D11/00 +1 more

Timeline

Timeline From CIPO dates

198019821984198619881990199219941996Patent grantedFeb 6, 1979Term endedFeb 6, 1996

Sources & verification

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