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US3948653A Expired / Lapsed US ⏱️ 0.0 years remaining

Novel nonprecious alloy suitable for fusion to porcelain

Assignee: Austenal Inc
•
Filing: 1975-06-02
•
Granted: 1976-04-06
•
Expires: 1995-06-02
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Abstract

Abstract A nonprecious alloy for fixed dental restorations such as for porcelain fused to metal, plastic veneered crown and bridge, nonveneered crown and bridge, inlays, etc. includes the following ranges of constituents in percentages by weight: Constituent Proportional Range ______________________________________ Nickel Balance Chromium 12-15% Aluminum 0-1% Silicon 0-1% Tin 0-1.25% Manganese 0.01-0.75% Gallium 4.5-8% Molybdenum 5-8% Iron 3-10% ______________________________________ With the proviso that the combined percentage of tin, gallium and silicon must be at least 5.75%.

Inventors

  • 👤 John Aloysius Tesk
  • 👤 Ronald Peter Dudek
  • 👤 Peter Kosmos

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-06 09:43
CPC Classifications
C; C22; C22C; C22C19/00; C22C19/03; C22C19/05; C22C19/051; C22C19/056; A; A61; A61K; A61K6/00; A61K6/80; A61K6/84

Claims Analysis

Total Claims: 9
Claim 1
Independent Claim 55 words
A nonprecious alloy consisting essentially of the following constituents in the indicated percentages by weight: Constituent Proportional Range ______________________________________ Chromium 12-15% Aluminum 0-1% Silicon 0-1% Tin 0.00-1.25% Manganese 0.01-0.75% Gallium 4.5-8% Molybdenum 5-8% Iron 3-10% Nickel Balance ______________________________________ with the proviso that the combined percentage of tin, gallium and silicon must be at least 5.75%.
Claim 2
Dependent Claim 55 words
A nonprecious alloy consisting essentially of the following constituents in the indicated percentages by weight: Constituent Proportional Range ______________________________________ Chromium 12-15% Aluminum 0-1% Silicon 0-1% Tin 0.00-1.25% Manganese 0.01-0.75% Gallium 4.5-8% Molybdenum 5-8% Iron 3-10% Nickel Balance ______________________________________ with the proviso that the combined percentage of tin, gallium and silicon must be at least 5.75%.
Claim 3
Dependent Claim 9 words
The alloy of claim 1 containing about .1% manganese.
Claim 4
Dependent Claim 9 words
The alloy of claim 1 containing about 7.5% gallium.
Claim 5
Dependent Claim 9 words
The alloy of claim 1 containing about 7% molybdenum.
Claim 6
Dependent Claim 9 words
The alloy of claim 1 containing about 5% iron.
Claim 7
Dependent Claim 9 words
The alloy of claim 1 containing about 13.5% chromium.
Claim 8
Dependent Claim 38 words
The alloy of claim 1 consisting essentially of the following constituents in the indicated ranges of percentages by weight. Constituent Proportional Range ______________________________________ Nickel 66.65% Chromium 13% Molybdenum 7% Silicon 0.75% Manganese 0.1% Iron 5% Gallium 7.5%. ______________________________________
Claim 9
Dependent Claim 37 words
The alloy of claim 1 consisting of the following constituents in approximately the indicated percentages by weight: Constituent Composition ______________________________________ Nickel 65.4% Chromium 13.5% Molybdenum 7% Tin 1% Manganese 0.1% Iron 5% Gallium 7.5% Silicon 0.5%. ______________________________________

References Cited (Backward Citations)

US3841868A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1979-04-06 1979-10-06 1980-04-06 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1983-04-06 1983-10-06 1984-04-06 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1987-04-06 1987-10-06 1988-04-06 $7700.00 Window Closed / Lapsed

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