Security device and method for producing it

US6726813B2 · kind B2 · utility

Assignee

• GIESECKE & DEVRIENT GMBH · DE

Inventors

• Wittich Kaule · Grafing, DE
• Gregor Grauvogl · Hersbruck, DE
• Jurgen Schutzmann · Brackenheim, DE
• Friedrich Kretschmar · Munich, DE

Key dates

• Filing date: Feb 28, 2002
• Grant date: Apr 27, 2004
• Expiry date: Feb 28, 2022

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31681
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

The invention relates to a security device having at least one plastic layer and one specularly reflecting metal layer. An inorganic auxiliary layer is disposed between the plastic layer and the metal layer.