US2522937A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solder flux
Assignee: General Electric Co
•
Filing: 1949-03-30
•
Granted: 1950-09-19
•
Expires: 1969-03-30
Abstract
No abstract record available.
Inventors
- 👤 Gordon M Forker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:07
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/36
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
101 words
A LIQUID SOLDER FLUX COMPOSITION CONSISTING ESSENTIALLY OF FROM 2 TO 15 PARTS BY WEIGHT OF ZINC CHLORIDE, FROM 2 TO 10 PARTS BY WEIGHT OF A FATTY ACID HAVING A MOLECULAR WEIGHT ABOVE APPROXIMATELY 250, FROM 1 TO 5 PARTS BY WEIGHGT OF AN ORGANIC AMINE HYDROCHLORIDE, AND A SOLVENT CONSISTING ESSENTIALLY OF ONE OR MORE HIGHER DIOLS HAVING AT LEAST A FOUR-CARBON CHAIN MOLECULE AND CHARACTERIZED BY A MAXIMUM MOISTURE ABSORPTION OF LESS THAN APPROXIMATELY 20 PER CENT AT 63 PER CENT RELATIVE HUMIDITY AND 25*C., SAID SOLVENT BEING PRESENT IN AN AMOUNT SUFFICIENT TO FORM A LIQUID SOLUTION.
References Cited (Backward Citations)
US1783925A
Cited
US1811667A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-09-18 | 1954-03-20 | 1954-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-09-18 | 1958-03-20 | 1958-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-09-18 | 1962-03-20 | 1962-09-19 | $7700.00 | Window Closed / Lapsed |