Attachments in the field of dental technology made of noble metal alloys with melting ranges above 1500 degree celsius

US4806306A · kind A · utility

Assignee

• Degussa AG · DE

Inventors

• Werner Groll · Alzenau, DE
• Rudi Steinke · Hanau, DE
• Harry Schiwiora · Pforzheim, DE

Key dates

• Filing date: Mar 9, 1988
• Grant date: Feb 21, 1989
• Expiry date: Mar 9, 2008

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C22C5/04
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

Noble metal alloys are used to produce attachments that can be cast-on, particularly in dental technology, having a melting range above 1500.degree. C. The alloys comprise about 40-70% platinum, about 10-40% palladium, about 5-20% iridium, about 0.5-10% gold, about 0-13 3% silver and about 0-1% each of ruthenium and rhodium.