US2774137A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and flux for soldering aluminum
Assignee: Individual
•
Filing: 1953-08-04
•
Granted: 1956-12-18
•
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 06:55
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.
References Cited (Backward Citations)
US746802A
Cited
US1550987A
Cited
US1895133A
Cited
US1918197A
Cited
US2071583A
Cited
US2214422A
Cited
US2301332A
Cited
US2474863A
Cited
US2569149A
Cited
US2538495A
Cited
US2575413A
Cited
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 |