Secure document, system for making same and system for reading said document
CA 2378658 A1 · Owner: Loiseaux, Brigitte · Inventors: Loiseaux, Brigitte; Joubert, Cecile; Robin, Philippe
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns a document comprising at least a drawing or an information produced for example, by printing. Said document further comprises a hologram representing part of the document. The hologram of the document is recorded by a system comprising a pre-recorded or electrically controllable optical modulator (23) wherein is recorded the image of part at least of the document. Said modulator is designed to be associated with a photosensitive material film (21). A first reference wave (R) illuminates the photosensitive material film. A second incident wave (I) on said modulator (23) and producing a third object wave (O) is also transmitted with the photosensitive material film to …
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 4, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 4, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 4, 2022.
- 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.