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Expired Canadian patentCanada

Method of manufacturing thin metal wire

CA 1194677 A · Owner: Unitika Ltd. · Inventors: Tsubata, Hisayasu; Hamashima, Tatsuo; Hagiwara, Michiaki

CIPO record

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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 thin metal wire having a circular cross section is produced by a method which comprises spouting molten metal through a spinning nozzle and bringing the resultant flow of molten metal into contact with a layer of liquid cooling medium formed on a grooved conveyor belt in motion thereby quenching and solidifying the flow of molten metal. This method is capable of continuously producing a thin metal wire of high quality economically on a commercial scale. It is highly effective in directly producing a thin metal wire having an amorphous non-, equilibrium crystalline, or microcrystalline structure.

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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 October 8, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 8, 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.
FiledFebruary 28, 1983
GrantedOctober 8, 1985
Term endedOctober 8, 2002
Patent numberCA 1194677 A
Classification (IPC)B22D11/01 +2 more

Timeline

Timeline From CIPO dates

1984198619881990199219941996199820002002Application filedFeb 28, 1983Patent grantedOct 8, 1985Term endedOct 8, 2002

Sources & verification

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