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Expired Canadian patentCanada

Total organic carbon (toc) analyzer

CA 2527498 C · Owner: Kounaves, Samuel P. · Inventors: Kounaves, Samuel P.

CIPO record

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Abstract From the Canadian patent

The invention disclosed is a total organic carbon (TOC) analyzer comprised of an electrochemical cell comprising a diamond-film electrode (2) doped with boron or other conductivity including material. The diamond-film electrode is the working electrode and carries out the oxidation of TOC to produce carbon dioxide. The apparatus further comprises sensors for detecting the carbon dioxide produced. Such sensors include but are not limited to a tunable diode laser (1) and/or ion-selective electrode (5). The invention also discloses a method for measuring TOC in an aqueous solution using a total organic carbon analyzer.

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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 June 10, 2003 and granted December 29, 2015. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 10, 2023.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 10, 2025.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 10, 2003
GrantedDecember 29, 2015
Term endedJune 10, 2023
Patent numberCA 2527498 C
Classification (IPC)G01N9/24 +1 more

Timeline

Timeline From CIPO dates

2004200620082010201220142016201820202022Application filedJune 10, 2003Patent grantedDec 29, 2015Term endedJune 10, 2023

Sources & verification

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