Method and assembly for coating a moving web
CA 2118198 A1 · Owner: Paloviita, Petri · Inventors: Paloviita, Petri; Koskinen, Jukka
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
57 Abstract, A method and an assembly for coating a board or paper web (5) with the help of an air knife (4) as the doctoring means comprising a first backing roll (1) which backs the web during the application of the coating mix to the web (5) and a second backing roll (3) around which the web (5) passes after the coat application and which backs the web during the smoothing of the coat with the help of the air knife (4). The invention is based on applying the coating mix to the web (5) with a correct thickness of the coat by means of a slot-orifice applicator apparatus (2). In the applicator apparatus (2) the coating mix flow is directed in a reverse direction to the travel of the web (5) …
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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 14, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 14, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 14, 2016.
- 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.