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US 2015/0220057 A1Published application
Security document and/or document of value containing a visually changeable window with a hologram
AssigneeBayer MaterialScience AG
InventorsGeorgios Tziovaras, Heinz Pudleiner, Kira Planken, Stefan Janke, Marc-Stephan Weiser, Thomas Fäcke
Life of this patent
Estimating the term…
Abstract
The present invention relates to a security document and/or document of value with a hologram in a visually changeable window as a novel security element, and also to a method for producing the same.
Claims15
1-14. (canceled)
A document of security and/or value, comprising at least one window, the window being formed from a multilayer assembly, wherein the multilayer assembly has
- at least one layer (P) comprising at least one photopolymer and incorporating at least one hologram (H) and
- at least one transparent, optically switchable layer (O) which becomes non-transparent by means of heat or irradiation.
Dependencies are inferred from the claim text.