Alloys or metallic compositions – Palladium base
Patent
1994-05-02
1995-07-11
Yee, Deborah
Alloys or metallic compositions
Palladium base
420465, 148442, 433207, 433208, 4332281, C22C 500
Patent
active
054318750
ABSTRACT:
A precious metal alloy for dental restorations which develops a light oxide upon firing, on a percentage weight basis at makeup, consists of 60-95 precious metal(s) selected from the group consisting of 60-855 palladium, 0-10 gold, 0-10 platinum, 0-12 silver, and mixtures thereof; 1-15 tin; 2-7 zinc; 0.005-0.2 boron; 0-2 gallium; 0-2 cobalt; 0-15 indium; 0-0.2 of a deoxidant selected from the group consisting of silicon, germanium, magnesium, aluminum, lithium, tantalum and mixtures thereof; and 0-1.0 of a grain refiner selected from the group consisting of ruthenium, iridium, rhenium, and mixtures thereof. The alloy has a liquidus temperature of not more than 1400.degree. C., and the alloy has a tensile yield strength of at least 250 Mpa and an elongation of at least 2 percent. Restorations having a porcelain coating fired on castings of the alloy evidence a light oxide color.
REFERENCES:
patent: 3819366 (1974-06-01), Katz
patent: 3928913 (1975-12-01), Schaffer
patent: 3929474 (1975-12-01), Ingersoll
patent: 3929475 (1975-12-01), Ingersoll
patent: 4205982 (1980-06-01), German
patent: 4350526 (1982-09-01), Schaffer
patent: 4387072 (1983-06-01), Schaffer
patent: 4518564 (1985-05-01), Prasad
patent: 4527979 (1985-07-01), McLean et al.
patent: 4539177 (1985-09-01), Prasad
patent: 4659384 (1987-04-01), Daigo et al.
patent: 4943483 (1990-07-01), Ingersoll et al.
patent: 4992297 (1991-02-01), van der Zel
patent: 5298218 (1994-03-01), Groll et al.
Cameron Thomas B.
Smith, III Edward F.
The J. M. Ney Company
Yee Deborah
LandOfFree
Dental alloy producing light oxides does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Dental alloy producing light oxides, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dental alloy producing light oxides will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-501631