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Expired Canadian patentCanada

Deoxidation of open type steels for improved formability

CA 1086067 A · Owner: Uss Engineers And Consultants, Inc. · Inventors: Gilbert, Saul; Bassett, James G. Jr.

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Abstract From the Canadian patent

A method is disclosed for the deoxidation of open type steels, eg. rimmed and capped steels, which are particularly useful in the production of sheet products with improved formability. The requisite amount of deoxidation in the ladle is achieved through the use of conventional deoxidizers, other than aluminum (preferably silicon carbide). Deoxidation in the mold is also achieved without the use of aluminum. Here, however, it is necessary that mold deoxidation be achieved through the use of magnesium generally, added in the form of a magnesium-nickel alloy.

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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 September 23, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 23, 1997.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 30, 1976
GrantedSeptember 23, 1980
Term endedSeptember 23, 1997
Patent numberCA 1086067 A
Classification (IPC)C21C7/06 +1 more

Timeline

Timeline From CIPO dates

1977198019831986198919921995Application filedDec 30, 1976Patent grantedSep 23, 1980Term endedSep 23, 1997

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