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Expired Canadian patentCanada

Filtering element for liquids and filtering installation comprising same

CA 2579194 C · Owner: Gaudfrin, Guy · Inventors: Gaudfrin, Guy

CIPO record

Overview

Drawings and full text

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

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Abstract From the Canadian patent

The invention concerns a filter for liquids loaded with solid particles comprising a vessel (52) provided with an inlet for the liquid to be filtered an outlet for the filtrate emerging into a manifold and a discharge orifice for the sludge of solid particles and wherein is enclosed a plurality of filtering elements (10) each filtering element shaped like an elongated pocket (16) of fabric (12) of filtering media having an upper opening (10) in communication with the outlet and mounted around frames (18) provided with longitudinal drainage channels (30) and suspended to support elements housed in said vessel and comprising a radial pipe (20) forming a manifold wherein emerges the opening of …

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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 23, 2004 and granted February 19, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 23, 2024.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 23, 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 23, 2004
GrantedFebruary 19, 2013
Term endedSeptember 23, 2024
Patent numberCA 2579194 C
Classification (IPC)B01D29/50

Timeline

Timeline From CIPO dates

2005200720092011201320152017201920212023Application filedSep 23, 2004Patent grantedFeb 19, 2013Term endedSep 23, 2024

Sources & verification

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