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
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract 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.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.