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Expired Canadian patentCanada

Enhanced analysis of antiscale polymeric antiscale agents

CA 2603675 C · Owner: Hails, Mike · Inventors: Jones, Chris; Hails, Mike

CIPO record

Overview

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

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Abstract From the Canadian patent

The invention concerns a method for analyzing and controlling antiscale content in the presence of perturbing ions. In particular the antiscale agents to be analyzed or controlled are polymers and comprise an anionic group such as a strong acid group, but can also comprise phosphonates or phosphate esters.

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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 April 4, 2006 and granted February 5, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 4, 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.
FiledApril 4, 2006
GrantedFebruary 5, 2013
Term endedApril 4, 2026
Patent numberCA 2603675 C
Classification (IPC)G01N30/00 +2 more

Timeline

Timeline From CIPO dates

2007200920112013201520172019202120232025Application filedApril 4, 2006Patent grantedFeb 5, 2013Term endedApril 4, 2026

Sources & verification

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