Security paper and method for producing the same
CA 2515420 C · Owner: Giesecke & Devrient Gmbh · Inventors: Langer, Joerg; Mengel, Christoph; Habik, Klaus
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 security paper for producing value documents such , as , bank notes, passports, identification documents or the like having a flat , substrate (12) , provided at least partly with a dirt-repellent protective layer (14) for extending the life , time and fitness for circulation. According to the invention the protective , layer (14) , comprises at least two lacquer layers (16 18), a first lower lacquer layer , (16) being formed by a physically drying lacquer layer applied to the substrate (12) which makes , contact with the substrate (12) therebelow and closes its pores and a second , upper , lacquer layer (18) being present which protects the substrate (12) from …
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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 3, 2004 and granted May 8, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 3, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 3, 2026.
- 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.