Patent · US Active

Securing the authenticity of value documents by means of characteristic substances

US10836198B2 · kind B2 · utility

0Cited by

17References

28Claims

0Family size

Assignee

GIESECKE+DEVRIENT CURRENCY TECHNOLOGY GMBH · DE

Inventors

Ulrich Scholz · Buchbach, DE
Gregor Grauvogl · Hersbruck, DE

Key dates

Filing date	Oct 19, 2016
Grant date	Nov 17, 2020
Priority date	—
Expiry date	Oct 19, 2036

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/2991
WIPO fieldOther consumer goods
WIPO sectorOther fields

Abstract

A feature substance is provided for securing the authenticity of documents of value, having at least one luminescent substance in particle form and nanoparticles enveloping the surfaces of the luminescent substance particles at least partially, wherein the properties of the feature substance result from the interaction of the properties of the luminescent substance and of the nanoparticles. The invention furthermore relates to a method for producing the feature substance, a method for securing the authenticity of a security element or document of value using a feature substance, as well as security elements and documents of value with authenticity features on the basis of the feature substance.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.