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Expired Canadian patentCanada

Copper coated, iron-carbon eutectic alloy powders

CA 1071905 A · Owner: Ford Motor Company Of Canada · Inventors: Kaufman, Sydney M.

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

A mechanical mixture of selected powders is subjected to compressive forces to define a pre-compact the pre-compact then being subjected to liquid phase sintering for producing a raw alloy steel product which is more economical and has enhanced physical properties particularly, tensile strength as compared to sintered compacts produced by the prior art to date. The improvement in physical properties and processing technique results principally from the use of a mechanical mixture consisting of a base iron powder and a coated alloyed additive powder having selected alloying ingredients (such as manganese nickel, molybdenum, in an iron-carbon system); the particles of the alloyed powder have …

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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 19, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 19, 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.
Filed—
GrantedFebruary 19, 1980
Term endedFebruary 19, 1997
Patent numberCA 1071905 A
Classification (IPC)C22C1/04 +2 more

Timeline

Timeline From CIPO dates

198119831985198719891991199319951997Patent grantedFeb 19, 1980Term endedFeb 19, 1997

Sources & verification

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