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Expired Canadian patentCanada

Twin-wire press

CA 2558232 C · Owner: Metso Paper, Inc. · Inventors: Loevgren, Hans

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 present invention relates to a twin-wire press (2) for dewatering of a fibre suspension. A link system (20) is arranged in one end with a joint (22) at a , press frame (16) and in another end arranged with a joint (24) at an upper section , (26) of a first dewatering table (8 8'), whereby the first dewatering table (8, 8') along , its whole longitudinal extension (L2) can be moved in direction (T) from and against a , second dewatering table by movement by means of the press and lift arrangement (18). This simplifies maintenance and exchange of the wire as well as , cleaning of a , twin-wire press without the need for prolonged stoppage of production.

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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 March 17, 2005 and granted October 23, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 17, 2025.
  • 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.
FiledMarch 17, 2005
GrantedOctober 23, 2012
Term endedMarch 17, 2025
Patent numberCA 2558232 C
Classification (IPC)D21F1/00 +1 more

Timeline

Timeline From CIPO dates

2006200820102012201420162018202020222024Application filedMarch 17, 2005Patent grantedOct 23, 2012Term endedMarch 17, 2025

Sources & verification

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