Patent US2723929A successfully refreshed from Google Patents.
US2723929A
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Soldering flux and method of preparation
Assignee: Horizons Inc
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Filing: 1954-06-18
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Granted: 1955-11-15
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Expires: 1974-06-18
Abstract
No abstract record available.
Inventors
- 👤 Frank C Wagner
- 👤 Liu Tien-Shih
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:26
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/36; B23K35/3601; B23K35/3603
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
A SOLDERING FLUX FOR ALUMINUM CHARACTERIZED BY BOTH A MELTING POINT AND A SOLUBILITY FOR SURFACE OXIDE ON ALUMINUM BELOW ABOUT 250*C. WHICH CONSISTS ESSENTIALLY OF THE PRODUCT OF FUSING TO HOMOGENEITY A MIXTURE OF ALUMINUM CHLORIDE AND AN ALKALI METAL CHLORIDE OF THE GROUP CONSISTING OF SODIUM, POTASSIUM AND LITHIUM CHLORIDES IN WHICH THE MOLAR PROPORTION OF ALUMINUM CHLORIDE IN THE ALUMINUM CHLORIDE-ALKALI METAL CHLORIDE MIXTURE RANGES BETWEEN ABOUT 52% AND ABOUT 82%.
Claim 2
Dependent Claim
74 words
A SOLDERING FLUX FOR ALUMINUM CHARACTERIZED BY BOTH A MELTING POINT AND A SOLUBILITY FOR SURFACE OXIDE ON ALUMINUM BELOW ABOUT 250*C. WHICH CONSISTS ESSENTIALLY OF THE PRODUCT OF FUSING TO HOMOGENEITY A MIXTURE OF ALUMINUM CHLORIDE AND AN ALKALI METAL CHLORIDE OF THE GROUP CONSISTING OF SODIUM, POTASSIUM AND LITHIUM CHLORIDES IN WHICH THE MOLAR PROPORTION OF ALUMINUM CHLORIDE IN THE ALUMINUM CHLORIDE-ALKALI METAL CHLORIDE MIXTURE RANGES BETWEEN ABOUT 52% AND ABOUT 82%.
References Cited (Backward Citations)
US1312154A
Cited
US2507346A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-11-14 | 1959-05-16 | 1959-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-14 | 1963-05-16 | 1963-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-14 | 1967-05-16 | 1967-11-15 | $7700.00 | Window Closed / Lapsed |