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Expired Canadian patentCanada

High-energy cascading of abrasive wear components

CA 2555589 C · Owner: Varel International Acquisition, L.P. · Inventors: Rainey, Allan William; Kita, John Franklin

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

In accordance with the present invention a method for manufacturing tungsten , carbide components is provided. The method includes forming a composite material out of tungsten carbide powder and binder powder pressing the , composite material into a plurality of components heating the plurality of , components, optionally under pressure to liquefy the binder, cooling the , plurality of components until the binder solidifies optionally grinding each , of the plurality of components to a desired size and cascading the plurality , of components in a cascading machine under high energy conditions.

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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 September 9, 2004 and granted January 14, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 9, 2024.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 9, 2026.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 9, 2004
GrantedJanuary 14, 2014
Term endedSeptember 9, 2024
Patent numberCA 2555589 C
Classification (IPC)C22C29/08 +2 more

Timeline

Timeline From CIPO dates

2005200720092011201320152017201920212023Application filedSep 9, 2004Patent grantedJan 14, 2014Term endedSep 9, 2024

Sources & verification

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