Marked items and verification methods
AssigneeHaelixa AG
InventorsMichela Puddu, Gediminas Mikutis
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Abstract
The invention provides methods for stably immobilizing nucleic acid tracers onto surfaces of products and objects. This method is applied for the identification and authentication of the marked object or product. The present invention further provides specific coated articles and their use in product verification; processes for manufacturing such coated articles, methods for the verification of the coated article, methods for the quantification of the coated article blending, and products suitable for such verification and quantification method.
Claims8
A marked item containing a coating, said coating comprises tracers in a matrix, wherein:
- the coating is located on, or applied to, a surface of said item;
- and
- the coating fully covers the surface of said item, or covers at least one macroscopic surface area of said item, or covers a multitude of microscopic surface areas of said item;
- and
- the coating comprises a multitude of said tracers embedded in said matrix;
- the tracer consists of nucleic acids encapsulated within particles or consists of nucleic acids attached to the surface of particles which are encapsulated within particles;
- and
- the tracer is free of covalent bonds to said item;
- and
- the matrix is a silica-matrix, and
- the matrix possesses a non-porous structure, thereby sealing said tracer.
Dependencies are inferred from the claim text.