Patent · US Expired

Use of silver-free palladium alloys for firing on dental ceramics

US4681735A · kind A · utility

12Cited by

3References

6Claims

0Family size

Assignee

Degussa AG · DE

Inventors

Werner Groll · Alzenau, DE
Gernot Schock · Bruchköbel, DE
Doris Hathaway · Hanau, DE
Rudolf Wagner · Fontnas, CH

Key dates

Filing date	Sep 12, 1985
Grant date	Jul 21, 1987
Priority date	—
Expiry date	Sep 12, 2005

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC22C5/04
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

Economical but readily workable palladium alloys for baking on dental ceramics consist of 60 to 80% palladium, 0 to 8% gold, 0 to 5% platinum, 0 to 1% ruthenium and/or rhenium, 2 to 20% copper, 1 to 12% tin and/or indium, 0.2 to 5% of at least one of the elements tungsten, molybdenum, niobium, and tantalum, and 0 to 15% cobalt, with the proviso that the sum of tin and indium must be between 5 and 14%.

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