US2664371A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Soldering flux
Assignee: Individual
•
Filing: 1951-12-20
•
Granted: 1953-12-29
•
Expires: 1971-12-20
Abstract
No abstract record available.
Inventors
- 👤 Chester A Snell
- 👤 Jacob M Fain
- 👤 Rosa John A De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:15
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/36; B23K35/3612
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
49 words
A SOLDERING FLUX CONSISTING OF 2 TO 5% BY WEIGHT OF BORON TRIFLUORIDE ETHERATE, ABOUT 11% BY WEIGHT OF ETHYL DIMETHYL CETYL AMMONIUM BROMIDE, 25 TO 30% BY WEIGHT OF A GLYCOL ETHER AND THE REMAINDER BEING A RESIN SELECTED FROM THE GROUP CONSISTING OF ROSIN AND ABIETIC ACID.
References Cited (Backward Citations)
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US1949916A
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US2124675A
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US2161803A
Cited
US2291400A
Cited
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US2429033A
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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) | 1956-12-28 | 1957-06-29 | 1957-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-28 | 1961-06-29 | 1961-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-28 | 1965-06-29 | 1965-12-29 | $7700.00 | Window Closed / Lapsed |