Machine-readable security element for security products

US8039094B2 · kind B2 · utility

Assignees

• Merck Patent GmbH · DE
• BUNDESDRUCKEREI GMBH · DE

Inventors

• Burkhard Krietsch · Dieburg, DE
• Matthias Kuntz · Seeheim-Jugenheim, DE
• Oliver Muth · Berlin, DE
• Manfred Paeschke · Wandlitz, DE
• Jakob Kuen · Berlin, DE

Key dates

• Filing date: Apr 29, 2005
• Grant date: Oct 18, 2011
• Expiry date: Jan 19, 2027

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/258
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to a machine-readable security element for security products, containing at least one particulate substance that has electroluminescent properties and a transparent, electrically conductive pigment. Also disclosed are a printing ink for producing such a security element and a security product comprising said security element.