Patent US2664370A successfully refreshed from Google Patents.
US2664370A
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US
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Soldering flux
Assignee: Individual
•
Filing: 1951-12-20
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Granted: 1953-12-29
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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
2026-10-29 21:44
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/36; B23K35/3612
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
77 words
A SOLDERING FLUX CONSISTING ESSENTIALLY OF ABOUT 10% TO 12% BY WEIGHT OF A BORON TRIFLUORIDE ADDITION PRODUCT OF AN AMINE SELECTED FROM THE GROUP CONSISTING OF DIPHENYL AMINE, DIPHENYL GUANIDINE AND PHENYL DIETHANOL AMINE, 3.5% TO 8% BY WEIGHT OF TETRACHLORO-NAPHTHALENE, 55% TO 75% BY WEIGHT OF A RESIN SELECTED FORM THE GROUP CONSISTING OF ROSIN, HYDROGENATED ROSINS, ROSIN MODIFIED MALEIC ESTER RESINS AND ABIETIC ACID, AND 10% TO 30% BY WEIGHT OF A GLYCOL ETHER.
References Cited (Backward Citations)
US1838370A
Cited
US1989557A
Cited
GB471202A
Cited
US2117649A
Cited
US2238069A
Cited
US2291400A
Cited
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 |