Arrangement for the treatment of cellulose pulp
CA 2609463 C · Owner: Andersson, Rickard · Inventors: Lundberg, Jorgen T.; Bylander, Johan; 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 at , least one rotary cylindrical element (5) against which the pulp is dewatered, and where a seal (1 ) is located in an end seal holder (4) so that the seal , has a contact surface (6) against the rotary cylindrical element (5) and an application surface (7) placed against application means (8) located in a groove (9) in the end seal holder (4), where the seal has a longitudinal extension, which corresponds to the entire or at least a greater part of the circumference of the cylindrical element and is intended to seal against the end of the cylindrical element, and where the seal is a polymer ledge (2) …
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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 30, 2006 and granted January 22, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 30, 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.