Patent US2659684A successfully refreshed from Google Patents.
US2659684A
Expired / Lapsed
US
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Soldering flux composition
Assignee: United States Steel Corp
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Filing: 1951-12-12
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Granted: 1953-11-17
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Expires: 1971-12-12
Abstract
No abstract record available.
Inventors
- 👤 Richard A Neish
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:48
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/36; B23K35/3601; B23K35/3603
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
16 words
A SOLDERING FLUX CONSISTING ESSENTIALLY OF A DILUTE SOLUTION OF AMMONIUM ACID FLUORIDE AND AMMONIUM CHLORIDE.
Claim 2
Dependent Claim
16 words
A SOLDERING FLUX CONSISTING ESSENTIALLY OF A DILUTE SOLUTION OF AMMONIUM ACID FLUORIDE AND AMMONIUM CHLORIDE.
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) | 1956-11-16 | 1957-05-18 | 1957-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-16 | 1961-05-18 | 1961-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-16 | 1965-05-18 | 1965-11-17 | $7700.00 | Window Closed / Lapsed |