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US4012228A Expired / Lapsed US ⏱️ 0.0 years remaining

Low intrinsic value alloys

Assignee: Austenal Inc
•
Filing: 1976-05-14
•
Granted: 1977-03-15
•
Expires: 1996-05-14
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Abstract

Abstract A low intrinsic value alloy for dental and jewelry use includes the following ranges of constituents in percentages by weight: ______________________________________ Constituents Proportional Range ______________________________________ Gold 0-45% Platinum 0-30% Palladium 0-20% Copper 30-55% Gallium 5-10% Zinc 0-1% Iridium 0-0.01% ______________________________________ WITH THE PROVISO THAT THE TOTAL OF SAID GOLD, PLATINUM AND PALLADIUM IS AT LEAST ABOUT 35%.

Inventors

  • 👤 Ronald P. Dudek
  • 👤 Peter Kosmos
  • 👤 John A. Tesk

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-27 10:57
CPC Classifications
C; C22; C22C; C22C30/00; C22C30/02; A; A61; A61K; A61K6/00; A61K6/80; A61K6/84; A61K6/844

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 51 words
An alloy consisting essentially of the following constituents in the indicated percentages by weight: ______________________________________ Constituents Proportional Range ______________________________________ Gold 0-45% Platinum 0-30% Palladium 0-20% Copper 30-55% Gallium 5-10% Zinc 0-1% Iridium 0-0.01% ______________________________________ with the proviso that the total of said gold, platinum and palladium is at least about 35%.
Claim 2
Dependent Claim 51 words
An alloy consisting essentially of the following constituents in the indicated percentages by weight: ______________________________________ Constituents Proportional Range ______________________________________ Gold 0-45% Platinum 0-30% Palladium 0-20% Copper 30-55% Gallium 5-10% Zinc 0-1% Iridium 0-0.01% ______________________________________ with the proviso that the total of said gold, platinum and palladium is at least about 35%.
Claim 3
Dependent Claim 70 words
An alloy in accordance with claim 1 containing about 10% gallium and the following additional constituents in the indicated ranges of percentages by weight: ______________________________________ Constituent Proportional Range ______________________________________ Gold 15-30% Platinum 0-20% Palladium 5-20% Copper 40-45% Iridium 0-0.01% ______________________________________ -3. The alloy of claim 2 consisting of the following constituents in approximately the indicated percentages by weight: ______________________________________ Constituent Proportional Range ______________________________________ Gold 25% Platinum 19.99% Palladium 5% ______________________________________
Claim 4
Dependent Claim 111 words
An alloy in accordance with claim 1 containing the following constituents in the indicated ranges of percentages by weight: ______________________________________ Constituent Proportional Range ______________________________________ Gold 30-45% Platinum 0-10% Palladium 0-20% Copper 35-45% Gallium 5-10% Zinc 0-1% Iridium 0-0.01% ______________________________________ -5. The alloy of claim 4 consisting of the following constituents in approximately the indicated percentages by weight: ______________________________________ Constituent Proportional Range ______________________________________ Gold 45% Platinum 4.99% Palladium 5% Copper 40% Gallium 5% Iridium 0.01% ______________________________________ -6. The alloy of claim 4 consisting of the following constituents in approximately the indicated percentages by weight: ______________________________________ Constituent Proportional Range ______________________________________ Gold 35% Platinum 0.09% Palladium 14.9% Copper 40% Gallium 10% Iridium 0.01% ______________________________________
Claim 5
Dependent Claim 33 words
The alloy of claim 4 consisting of the following constituents in approximately the indicated percentages by weight: ______________________________________ Constituent Proportional Range ______________________________________ Gold 35% Platinum 10% Palladium 10% Copper 35% Gallium 10% ______________________________________

References Cited (Backward Citations)

US2050077A Cited
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USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1980-03-14 1980-09-13 1981-03-15 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1984-03-14 1984-09-13 1985-03-15 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1988-03-14 1988-09-13 1989-03-15 $7700.00 Window Closed / Lapsed

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