Precious-metal material for articles of jewelry and a method of manufacturing them

US5578383A · kind A · utility

Assignee

• Degussa AG · DE

Inventors

• Hans-Hermann Beyer · Munich, DE
• Karl-Anton Starz · Rodenbach, DE

Key dates

• Filing date: Apr 10, 1995
• Grant date: Nov 26, 1996
• Expiry date: Apr 10, 2015

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/12049
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A precious-metal material for articles of jewelry and having low specific weight, high resistance to corrosion, in spite of a low content of precious metals, and free from toxic constituents which consists of 33 to 99 wt. % precious metal powder, 1 to 67 wt. % of a thermosetting organic plastics and 0 to 10% filler.