Dental alloy with a high gold content that is devoid of palladium and copper

US8524150B2 · kind B2 · utility

Assignee

• DeguDent GmbH · DE

Inventors

• Jochen Bauer · Gettorf, DE
• Lothar Volkl · Goldbach, DE
• Doris Hathaway · Hanau, DE
• Angela Klaus · Highland Park, US
• Martin Schuster · Eßlingen, DE
• Rudi Steinke · Hanau, DE

Key dates

• Filing date: Oct 13, 2005
• Grant date: Sep 3, 2013
• Expiry date: Apr 22, 2028

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61K6/844
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

A dental alloy with a high gold content that is devoid of palladium and copper. To achieve high mechanical stability, the dental alloy contains between 75 and 95 wt. % Au, between 5 and 20 wt. % Pt, between 0.5 and 3.5 wt. % Zn and/or Sn and/or In, between 0.1 and 0.8 wt. % of an element of a group I, in addition to a single particle refiner of a group II. The weight fraction of the element of group I is between 2 and 6 times that of the single particle refiner of group II, and one element of group I is represented by Nb or Ta or Ti or V and the particle refiner of group II is represented by Ir or Rh.