Apparatus and method for pulp drying
CA 2351392 A1 · Owner: Metso Paper, Inc. · Inventors: Tammekas, Timo; Pakkala, Ilkka; Kurki, Jarmo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a pulp-drying apparatus comprising a wet end, including at least a former section (2) which is supplied with pulp to be , dried from a headbox (1) or the like and a press assembly, comprising at , least one press section (20 30) through which a web (W) formed over the former section is adapted to travel. According to the invention the pulp web , (W) has its passage arranged as a closed transfer through the entire wet end. The invention relates also to a method for starting a pulp-drying machine and process, and to a method for increasing the dry content of pulp by means of a pulp-drying machine.
Read the whole patent
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 November 24, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 24, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 24, 2021.
- 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.