EP0124245A2
Expired / Lapsed
EP
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Nonprecious dental alloy
Assignee: Austenal International Inc
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Filing: 1984-03-26
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Granted: —
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Expires: 2004-03-26
Abstract
Abstract A nonprecious alloy for porcelain-bonded dental restorations contains in approximate percentage by weight, 25-30 chromium, 5-7 molybdenum, 0-1.0 each manganese and silicon, 0-0.3 carbon and 0-4 each gallium and indium, balance cobalt (except for any impurities and incidental ingredients), these constituents accounting for at least 99.5 wt. percent of the alloy and said impurities and incidental ingredients account for up to 0.5 wt. percent of the alloy, the sum of the manganese and silicon being at least about 0.5 wt. percent and the sum of the gallium and indium being at least about 1.25 wt. percent.
Inventors
- 👤 Henry Leroy Andrews
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 18:02
CPC Classifications
C; C22; C22C; C22C19/00; C22C19/07; A; A61; A61K; A61K6/00; A61K6/80; A61K6/84
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
84 words
A non-precious dental alloy containing the following constituents in approximate percentage by weight: and cobalt balance (except for any impurities and incidental ingredients) wherein (a) said constituents account for at least 99.5 weight percent of the alloy, and said impurities and incidental ingredients account for from 0 to 0.5 weight percent of the alloy, (b) the sum of the manganese and the silicon is at least about 0.5 percent, and (c) the sum of the gallium and indium is at least about 1.25 percent.
Claim 2
Dependent Claim
84 words
A non-precious dental alloy containing the following constituents in approximate percentage by weight: and cobalt balance (except for any impurities and incidental ingredients) wherein (a) said constituents account for at least 99.5 weight percent of the alloy, and said impurities and incidental ingredients account for from 0 to 0.5 weight percent of the alloy, (b) the sum of the manganese and the silicon is at least about 0.5 percent, and (c) the sum of the gallium and indium is at least about 1.25 percent.
Claim 3
Dependent Claim
35 words
The dental alloy of claim 1 containing from about 1.5 to 3 percent gallium and being essentially free of indium, or containing from about 1.5 to 3 percent indium and being essentially free of gallium.
Claim 4
Dependent Claim
16 words
The dental alloy of claim 2 containing about 28 percent chromium and about 6 percent molybdenum.
Claim 5
Dependent Claim
18 words
The dental alloy of claim 1 containing from about 1.5 to 3 percent each of indium and gallium.
Claim 6
Dependent Claim
32 words
The dental alloy of claim 4 containing about 28 percent chromium, about 6 percent silicon, about 0.05 percent manganese, about 0.6 percent silicon, about 0.05 percent carbon and about 1.7 percent indium.
References Cited (Backward Citations)
No citation records indexed.
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