Method of and arrangement for treating a fiber web
CA 2274691 A1 · Owner: Retulainen, Elias · Inventors: Retulainen, Elias
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 method of and an arrangement for treating a fiber web, whereby the fiber web (5) is dried substantially dry and led after that to be treated by means of heat and compression. At least one surface of the dry fiber web (5) is arranged moist and the fiber web is led into an apparatus comprising two endless air-impermeable bands (1 2) arranged to turn around , turning rolls (6a 6b, 7a, 7b), whereby the bands (1, 2) are arranged to run part of the way parallel to each other. At least one band (1 2) is heated and , the fiber web (5) is led between the bands (1 2).
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 December 10, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 10, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 10, 2019.
- 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.