Metal treatment – Stock – Noble metal base
Reexamination Certificate
2005-07-05
2005-07-05
Ip, Sikyin (Department: 1742)
Metal treatment
Stock
Noble metal base
C420S508000, C420S509000, C420S510000
Reexamination Certificate
active
06913656
ABSTRACT:
An alloy is provided for dental porcelain fused to metal restorations, having a rich gold color and light oxide coating for bonding the porcelain to the cast alloy substrate. The alloy has suitable mechanical properties for the support of the porcelain and is readily polished to a bright sheen. The alloy includes from 96 to 98 weight % Au with up to 3 weight % Pt, Pd, Ru, Ir, or combinations thereof and 0 to 1.5 wt % In, Sn, Fe, Mn, Cu, B, or combinations thereof.
REFERENCES:
patent: 3052982 (1962-09-01), Weinstein et al.
patent: 3981723 (1976-09-01), Tuccillo
patent: 4123262 (1978-10-01), Cascone
patent: 4205982 (1980-06-01), German
patent: 4387072 (1983-06-01), Schaffer
patent: 4997723 (1991-03-01), Tanaka
patent: 5423680 (1995-06-01), Prasad
patent: 5431875 (1995-07-01), Cameron et al.
patent: 5462437 (1995-10-01), Prasad et al.
patent: 5799386 (1998-09-01), Ingersoll et al.
patent: 5922276 (1999-07-01), Cascone
patent: 8927679 (1990-07-01), None
patent: 44 19 408 (1994-06-01), None
patent: 19607104 (1997-03-01), None
patent: 61067731 (1984-04-01), None
patent: 01132728 (1989-05-01), None
patent: 02190429 (1990-07-01), None
Ingersoll Clyde
Tridib Dasgupta
Ip Sikyin
Ivoclar Vivadent, Inc.
Nixon & Peabody LLP
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