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Expired Canadian patentCanada

Ultrafiltration circuit for the primary cooling fluid of a pressurized-water nuclear reactor

CA 1237203 A · Owner: Framatome · Inventors: Riviere, Jacques; Dagard, Philippe

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

Ultrafiltration circuit for the primary cooling fluid of a pressurised-water nuclear reactor which, comprises a first loop taken off from the discharge branch of the volumetric and chemical monitoring circuit and a second loop taken off from the charge branch of the circuit. Each of the loops incorporates an ultrafilter. The concentrate from the ultrafilter located on the loop is cooled, depressurised and conveyed into the circuit via a pipe downstream of the main cooling and depressurising means of the circuit. The concentrate from the ultrafilter of the loop is conveyed into the circuit via a pipe upstream of the means.

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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

  • Granted May 24, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 24, 2005.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 28, 1986
GrantedMay 24, 1988
Term endedMay 24, 2005
Patent numberCA 1237203 A
Classification (IPC)G21C19/30 +1 more

Timeline

Timeline From CIPO dates

1987198919911993199519971999200120032005Application filedMay 28, 1986Patent grantedMay 24, 1988Term endedMay 24, 2005

Sources & verification

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