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Expired Canadian patentCanada

Solid stick compositions comprising thermosetting plastic

CA 2597830 C · Owner: Kelsan Technologies Corp. · Inventors: Cotter, John; Eadie, Don; Lu, Xin

CIPO record

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Abstract From the Canadian patent

The present invention provides a modified solid stick composition comprising a thermosetting plasticizer, a resin, a lubricant a friction modifier, or a , combination thereof. The solid stick compositions may be used for application between two metal surfaces in sliding and rolling-sliding contact such as steel wheel-rail systems including mass transit and freight systems. A method of reducing energy consumption, or controlling friction between a metal surface and a second metal surface by applying the solid stick composition to one or more than one of the metal surfaces is also provided.

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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 February 14, 2006 and granted June 2, 2015. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 14, 2026.
  • Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
  • 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 14, 2006
GrantedJune 2, 2015
Term endedFebruary 14, 2026
Patent numberCA 2597830 C
Classification (IPC)C10M169/04 +1 more

Timeline

Timeline From CIPO dates

2007200920112013201520172019202120232025Application filedFeb 14, 2006Patent grantedJune 2, 2015Term endedFeb 14, 2026

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