Security element structure for documents, devices for checking documents with such security elements, method for the use thereof
CA 2298494 A1 · Owner: Puttkammer, Frank · Inventors: Puttkammer, Frank
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to the structuring of security elements for documents devices for checking documents with such security elements and a method for the use thereof according to patent application DE 197 18 916.4. The aim of the invention is to add further security elements to a security element structure for documents and to provide devices for checking said security elements, in addition to proposing a new method for using security elements and devices, which would make it substantially more difficult or even impossible for counterfeiters to produce counterfeit products which are so , close to the original that they cannot be detected by checking devices by , imitating the manner …
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 April 24, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 24, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 24, 2020.
- 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.