Method and equipment for moulding an article produced from paperboard
CA 2478818 C · Owner: Karine, Seppo · Inventors: Karine, Seppo; Raesaenen, Jari
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 and equipment for moulding an article (1) produced from paperboard or cardboard. Moulding is carried out by means of a moulding tool (2) that mechanically works the board; and to improve its mouldability, momentary irradiation (9) on the microwave frequency is exerted on the board, according to the invention. The invention can be applied to the manufacture of packages and disposable containers made of paperboard or cardboard; for example, to the forming of a rolled-up or folded rim around a drinking cup (1), a mug or a container the forming of a stiffening crease or projection on a paperboard container, or to the press moulding of paperboard …
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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 April 8, 2003 and granted April 3, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 8, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 8, 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.