Expired Canadian patentCanada
Security printing using a diffraction grating
CA 2545263 C · Owner: Printetch Limited · Inventors: Winton, Steven; Dicker, Mark; Boswell, David
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
There is provided an apparatus and a method of printing a diffraction grating. In particular, the present invention , relates to diffraction gratings applied to a substrate (1) such as a , hologram.
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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 November 12, 2004 and granted September 23, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 12, 2024.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 12, 2004
GrantedSeptember 23, 2014
Term endedNovember 12, 2024
Patent numberCA 2545263 C
Classification (IPC)B41F19/02
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.