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Expired Canadian patentCanada

Metal or ceramic powder production process by plasma atomization

CA 2183290 C · Owner: Tsantrizos, Peter G. · Inventors: Tsantrizos, Peter G.; Allaire, Francois; Entezarian, Majid

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 metal or an alloy of this metal or a ceramic product with a liquid phase is introduced in solid form (rod or filament), liquid at the point of intersection formed by several convergent jets of a plasma burner. Atomization occurs then after controlled cooling spheroidal powders whose dimensions in general vary between 10 and 300 µm. are obtained.

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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

  • Filed August 14, 1996 and granted August 12, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 14, 2016.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 14, 2018.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 14, 1996
GrantedAugust 12, 2014
Term endedAugust 14, 2016
Patent numberCA 2183290 C
Classification (IPC)B22F9/14 +2 more

Timeline

Timeline From CIPO dates

1997199920012003200520072009201120132015Application filedAug 14, 1996Patent grantedAug 12, 2014Term endedAug 14, 2016

Sources & verification

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