Patent · US Expired

Copper-based metal flakes, in particular comprising zinc and method for production thereof

US7485365B2 · kind B2 · utility

7Cited by

2References

11Claims

0Family size

Assignee

ECKART GmbH · DE

Inventors

Thomas Schuster · Achern, DE
Wolfgang Herzing · Neunkirchen, DE
Rolf Treude · Bad Berleburg, DE
Stanley W. Cichanowski · Manchester Center, US

Key dates

Filing date	Aug 7, 2003
Grant date	Feb 3, 2009
Priority date	—
Expiry date	Nov 30, 2023

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/2998
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

The present invention relates to highly lustrous gold-colored metal effect pigments comprising a copper-based alloy and additional metallic alloy components, preferably zinc, and which are produced by means of stripping and comminuting metal films deposited in vacuo.

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