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Expired Canadian patentCanada

Clad metal product

CA 1325461 C · Owner: Inco Alloys International, Inc. · Inventors: Mankins, William L.; Hardy, Charles P.; Gothard, David O.

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 process for producing clad products that utilizes wrought or cast components eliminating the need for costly metal powders and a can to contain then. A sleeve circumscribes a core leaving a space therebetween. Powder is introduced into the space and is sealed therein. The resultant billet is extruded generating a clean metallurgical bond between the core and the sleeve. The space need not be evacuated prior to heating the billet. Resultant clad welding rod permits higher operating amperages.

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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 December 21, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 21, 2010.
  • 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 23, 1989
GrantedDecember 21, 1993
Term endedDecember 21, 2010
Patent numberCA 1325461 C
Classification (IPC)A61C15/00 +2 more

Timeline

Timeline From CIPO dates

1990199319961999200220052008Application filedMarch 23, 1989Patent grantedDec 21, 1993Term endedDec 21, 2010

Sources & verification

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