US2813790A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gold-copper-indium brazing alloy
Assignee: Western Gold and Platinum Co
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Filing: 1953-01-27
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Granted: 1957-11-19
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Expires: 1973-01-27
Abstract
No abstract record available.
Inventors
- 👤 Walter L Hack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:36
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/24; B23K35/30; B23K35/302; B23K35/3013
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
A NEW BRAZING ALLOY FOR USE UNDER CONDITION OF ELEVATED TEMPERATURE AND HIGH VACUUM FOR APPLICATION TO PART PREVIOUSLY BRAZED BY ONE OF THE BINARY ALLOYS OF COPPER AND GOLD, SAID NEW BRAZING ALLOY COMPOSED ENTIRELY OF GOLD, COPPER AND INDIUM, SAID ALLOY COMPRISING APPROXIMATELY 60% BY WEIGHT OF GOLD, APPROXIMATELY 5% BY WEIGHT OF INDIUM, AND THE REMAINDER COPPER.
Claim 2
Dependent Claim
60 words
A NEW BRAZING ALLOY FOR USE UNDER CONDITION OF ELEVATED TEMPERATURE AND HIGH VACUUM FOR APPLICATION TO PART PREVIOUSLY BRAZED BY ONE OF THE BINARY ALLOYS OF COPPER AND GOLD, SAID NEW BRAZING ALLOY COMPOSED ENTIRELY OF GOLD, COPPER AND INDIUM, SAID ALLOY COMPRISING APPROXIMATELY 60% BY WEIGHT OF GOLD, APPROXIMATELY 5% BY WEIGHT OF INDIUM, AND THE REMAINDER COPPER.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-11-18 | 1961-05-20 | 1961-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-18 | 1965-05-20 | 1965-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-18 | 1969-05-20 | 1969-11-19 | $7700.00 | Window Closed / Lapsed |