Method for manufacturing board, and a board product
CA 2475347 A1 · Owner: Peltonen, Soili · Inventors: Nissinen, Kirsi; Peltonen, Soili; Mattila, Jorma
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for manufacturing a board product made up of at least two layers and , a multilayer board product. According to the method the board webs (4, 5, 6) , forming the layers are bonded together by gluing. According to the invention at least one of the webs is treated mechanically by compression so that in the web surface there form permanent deformations projecting from the web surface and the layers are glued together by using a starch-based adhesive which is , applied at a solids content over 45 % to the layers to be bonded. The adhesive having a high solids content dries and bonds rapidly to the surfaces to be joined, even without additional heating. Since the adhesive contains …
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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 February 17, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 17, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 17, 2025.
- 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.