Expired Canadian patentCanada
Document of value
CA 2493388 C · Owner: Giesecke & Devrient Gmbh · Inventors: Depta, Georg; Plaschka, Reinhard
Overview
Drawings and full text
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 document (1) such as a banknote or the like, consisting of security paper. At least one perceptible marking (2) in , the form of a relief structure, is produced in said security paper using a laser.
Read the whole patent
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 July 15, 2003 and granted January 24, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 15, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 15, 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.
FiledJuly 15, 2003
GrantedJanuary 24, 2012
Term endedJuly 15, 2023
Patent numberCA 2493388 C
Classification (IPC)B42D15/00
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.