US3791820A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluxless aluminum brazing
Assignee: United States Atomic Energy Commission
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Filing: 1972-06-23
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Granted: 1974-02-12
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Expires: 1992-06-23
Abstract
Abstract This invention relates to a fluxless brazing alloy for use in forming brazed composites made from members of aluminum and its alloys, said brazing alloy consisting of, in weight percent, 3555 percent aluminum, 10-20 percent silicon, 25-60 percent germanium; 65-88 percent aluminum, 2-20 percent silicon, 2-18 percent indium; 65-80 percent aluminum, 15-25 percent silicon, 515 percent yttrium.
Inventors
- 👤 W Werner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:37
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/24; B23K35/28; B23K35/286
Claims Analysis
Total Claims: 0
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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) | 1977-02-11 | 1977-08-13 | 1978-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-11 | 1981-08-13 | 1982-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-11 | 1985-08-13 | 1986-02-12 | $7700.00 | Window Closed / Lapsed |