Method for manufacturing a coated fibre web, improved paper or board machine and coated paper or board
CA 2418878 A1 · Owner: Lipponen, Juha · Inventors: Kinnunen, Juha S.; Lipponen, Juha; Ilmoniemi, Erkki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns a method and an improved paper machine for making a surface-sized paper web. Pulp is supplied from the headbox (100) wherein , additives and/or fillers and/or fines are admixed into the pulp to the wire , section (200), where water is removed from the web (W). From the wire section (200) the web (W) is guided to the press section (300) to press water from the web (W). The web (W) is then dried in the front drying section (400) whereupon the web (W) is surface-coated in the coating section (500) and dried in the post-drying section (600). Finally the web (W) is reeled by a reeler , (800). According to the invention in the headbox (100) starch and optionally …
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 August 6, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 6, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 6, 2023.
- 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.