A method for forming a web from aerosuspension of fibrous material
CA 2350508 A1 · Owner: Procter & Gamble Company · Inventors: Drobosyuk, Viktor Mikhailovich
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process and an apparatus for making paper by an aerodynamic method. An aerosuspension is fed onto a moving forming wire positioned at an angle relative to the aerosuspension flow. Then an air component is removed by , means of a suction device located on the opposite side of the wire. The aerosuspension feed and air removal are performed in a direct-flow channel in which the value of a suction force is set to increase in the direction of the forming wire motion so that the suction force applied to the fibrous material in the surface layer of the web being formed is approximately the same along the forming wire in the web formation zone. As a result a low fiber , concentration in …
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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 October 25, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 25, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 25, 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
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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.