Patent · US Active

Protective material comprising reversible and irreversible photochemical functional constituents

US8119185B2 · kind B2 · utility

0Cited by

11References

9Claims

0Family size

Assignees

Philipps-Universitat Marburg · DE
InovisCoat GmbH · DE

Inventors

Norbert Hampp · Hersbruck, DE
Martin Neebe · Kirchhain, DE
Arno Schmuck
Peter Roggendorf · Frankfurt, DE

Key dates

Filing date	Mar 28, 2006
Grant date	Feb 21, 2012
Priority date	—
Expiry date	Jul 17, 2027

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/24802
WIPO fieldOptics
WIPO sectorInstruments

Abstract

The invention relates to a security material comprising a carrier and at least one photochromic Protein and/or a mutein of a photochromic protein. The security material is characterized in that it comprises at least one irreversible photosensitive layer on the carrier, and the at least one photochromic protein and/or mutein is contained at least in the at least one photosensitive layer and/or in an optional additional layer. The inventive security material is also characterized in that it is highly forgery-proof, the photochromic biomolecule cannot be removed therefrom in a usable form, and the photochromic biomolecule does not need to be supplied to a large group of clients.

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