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Expired Canadian patentCanada

Arrangement for the treatment of cellulose pulp in a washing apparatus arranged with seal removing means

CA 2609095 C · Owner: Andersson, Rickard · Inventors: Lundberg, Jorgen; Henriksson, Magnus; Andersson, Rickard

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

A washing arrangement for washing and dewatering cellulose pulp comprising a , rotary drum (1) with a plurality of external compartments on the drum for the pulp to be washed, which compartments are defined by axial compartment walls distributed along the circumference of the drum a stationary cylindric casing , enclosing the drum whereby a ring-shaped space is defined between the casing and the drum, and where the ring-shaped space by means of longitudinal seals in axial direction of the drum is divided into a forming zone for forming the pulp in the compartments of the drum, at least one washing zone for washing the pulp and a discharge zone for feeding out the washed pulp where the …

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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 May 18, 2006 and granted September 17, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 18, 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.
FiledMay 18, 2006
GrantedSeptember 17, 2013
Term endedMay 18, 2026
Patent numberCA 2609095 C
Classification (IPC)D21C9/06

Timeline

Timeline From CIPO dates

2007200920112013201520172019202120232025Application filedMay 18, 2006Patent grantedSep 17, 2013Term endedMay 18, 2026

Sources & verification

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