Data carrier having a halftone image
CA 2594780 C · Owner: Franz, Peter · Inventors: Baldus, Christof; Meindl, Klaus; Adamczyk, Roger
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a data carrier (20) having produced by , intaglio printing, a halftone image that exhibits printed sub-areas (26 28) , having certain tonal values, at least three printed sub-areas having different tonal values. According to the present invention it is provided that one or , more of the different tonal values are formed by printed sub-areas (28) appearing fully printed to the naked eye and having a certain portion of unprinted white areas (W).
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 February 9, 2006 and granted September 30, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 9, 2026.
- 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.
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.