Patent US2774137A successfully refreshed from Google Patents.
US2774137A
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Method and flux for soldering aluminum
Assignee: Individual
•
Filing: 1953-08-04
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Granted: 1956-12-18
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Expires: 1973-08-04
Abstract
No abstract record available.
Inventors
- 👤 Yarow Max
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:39
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/36; B23K35/3612
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
103 words
THE METHOD OF SOLDERING ALUMINUM COMPRISING CLEANING THE METAL SURFACE TO BE SOLDERED, COATING THE CLEAN ALUMINUM SURFACE WITH A FLUX CONSISTING OF 27 TO 33% BY WEIGHT OF NON-DRYING GYLCERIDE OIL IN WHICH OLEIC ACID IS A PREDOMINANTLY FATTY ACID, A PETROLEUM LUBRICATING OIL FRACTTION HAVING A VISCOSITY OF ABOUT 10 TO 80 S. A. E. IN PROPORTION OF ABOUT 24 TO 36% BY WEIGHT, THE BALANCE BEING ROSIN IN PROPORTION OF ABOUT 30 TO 40% BY WEIGHT, AND APPLYING TO SAID FLUX COATED ALUMINUM SURFACE A MOLTEN SOLDER COMPOSITION COMPRISING AT LEAST 35% TIN, THE BALANCE BEING LEAD AND USUAL IMPURITIES.
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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) | 1959-12-18 | 1960-06-18 | 1960-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-18 | 1964-06-18 | 1964-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-18 | 1968-06-18 | 1968-12-18 | $7700.00 | Window Closed / Lapsed |