Materials coated with plate-like pigments

US5223360A · kind A · utility

Assignee

• Merck Patent GmbH · DE

Inventors

• Constanze Prengel · Weiterstadt, DE
• Klaus-Dieter Franz · Kelkheim, DE
• Hartmut Hartner · Weiterstadt, DE
• Manfred Kieser · Darmstadt, DE
• Axel von Daacke · Munich, DE
• Klaus Bernhardt · Groß-Umstadt, DE

Key dates

• Filing date: Nov 15, 1990
• Grant date: Jun 29, 1993
• Expiry date: Nov 15, 2010

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/251
• WIPO field: Other consumer goods
• WIPO sector: Other fields

Abstract

Materials coated with plate-like pigments and characterized in that the coating shows structuring in defined areas due to a difference in the orientation of the pigment particles are highly suitable in the area of general security printing.