Title: Noble metal alloy for dentistry and dental restoration using same

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Claims: Having thus described the invention I claim:

1. A noble metal alloy for dental and other applications consisting essentially of:

A. about 45.0-60.0 percent gold;

B. about 30.0-50.0 percent palladium;

C. about 2.0-7.0 percent tin;

D. about 3.0-10.0 percent of oxidizing component selected from the group consisting of zinc and mixtures thereof with indium, said oxidizing component containing at least 3.0 per cent zinc; and

E. about 0.0-2.0 percent of grain refining component selected from the group consisting of rhenium, nickel and platinum and mixtures thereof; all based upon the total weight of the alloy, the ratio of tin to palladium being 5-15:100 and the total amount of gold, palladium and platinum comprising not more than 95.0 percent of the alloy.

2. The alloy of claim 1 wherein said ratio of tin to palladium is 8-12:100.

3. The alloy of claim 1 wherein said alloy contains 0.05-2.0 percent of grain refining component.

4. The alloy of claim 1 wherein said gold is present in the amount of 48.0-56.0 percent, said palladium is present in the amount of 34.0-40.0 percent and said ratio of tin to palladium is 8-12:100.

5. The alloy of claim 4 wherein said alloy contains 0.05-2.0 percent of grain refining component.

Other info:

Inventors: German, Randall M. (Avon, CT, US)

Application Number: 954343
Filing Date: 1978-10-25
Publication_date: 1980-06-03
Assignee: The J. M. Ney Company (Bloomfield, CT)
Primary Class(es): 420/508 420/509, 420/589
Other Classes:
US Patent Ref:

B483256	Feb, 1976	Tuccillo	75/165.
3716356	Feb, 1973	Burnett	75/172.
4123262	Oct, 1978	Cascone	75/134.

Other Refs: 43-8354

, 1968	JP

Primary Examiner: Rutledge, L. Dewayne
Assistant Examiner: Skiff, Peter K.
Attorney: