Patent · US Expired

Dentures and alloys for use in same

US4836984A · kind A · utility

5Cited by

3References

3Claims

0Family size

Assignee

Degussa AG · DE

Inventors

Rudolf Wagner · Fontnas, CH
Harry Schiwiora · Pforzheim, DE
Manfred Stumke · Pforzheim, DE
Werner Groll · Alzenau, DE

Key dates

Filing date	Dec 11, 1987
Grant date	Jun 6, 1989
Priority date	—
Expiry date	Dec 11, 2007

Classification

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

Abstract

Palladium alloys consisting of (a) 65 to 85% palladium, (b) 0 to 10% gold and/or 0 to 5% platinum, (c) 0.1 to 10% tin, (d) 1 to 10% gallium, (e) 1 to 12% copper, (f) 0.05 to 1.5% ruthenium and/or 0.05 to 0.7% rhenium as well as (g) 0.01 to 4% tungsten and/or 0.01 to 4% aluminum and/or 0.01 to 4% zinc are use to produce firmly seated and removable dentures. These alloys do not form oxide films when melted in air.

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