Procedure for imprinting a filigree pattern on sheet of paper
CA 2428583 C · Owner: Pommier, Nicolas · Inventors: Hungler, Joel; Pommier, Nicolas; Neveu, Jean-Louis
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention concerns a procedure for imprinting a filigree type pattern (9) on at least a part of a piece (8) of absorbent paper the said procedure consisting in distorting the said paper under pressure by passage between at least one first smooth roller (1) and at least one second engraved roller (2). According to the invention an additive film is cold-pressed to at least one of the said surfaces of the paper during marking which promotes the formation of the filigree. The invention also targets an absorbent piece of paper including at least one ply of cellulose wadding and obtained by such a process.
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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 May 13, 2003 and granted April 9, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 13, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 13, 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.