Method and apparatus for controlling the moisture content of a web of sheet material
CA 1091005 A · Owner: Ohls, Per-Erik · Inventors: Ohls, Per-Erik; Soininen, Mauri
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Process and apparatus for the treatment of a paper web, which has been dried within the hygroscopic range by, utilizing a special treatment gas flow. The treatment gas flow is drawn through the web to be treated the state of the, treatment gas being adjusted to the equilibrium state substantially consistent with the desired ultimate moisture content of the web (at least at the ultimate stage of the treatment) whereby the points of the web with higher moisture content than average dry out and/or the points which are drier than average gain in moisture content towards the stage of the treatment gas with the aid of the gas flow.
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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
- Granted December 9, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 9, 1997.
- 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.