US3223561A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Soldering flux
Assignee: Connecticut Valley Chemical Inc
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Filing: 1962-01-19
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Granted: 1965-12-14
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Expires: 1982-01-19
Abstract
No abstract record available.
Inventors
- 👤 Jr Hobart N Durham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:07
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/36; B23K35/3612; B23K35/3618
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
A COMPOSITION FOR USE AS A SOLDERING FLUX COMPRISING A WATER SOLUTION CONSISTING ESSENTIALLY OF AT LEAST 1 MOLE PER LITER OF HYDRAZINE ACETATE, AND AN EXCESS OF ACETIC ACID, THE COMBINED AND FREE ACETIC ACID BEING PRESENT IN A MOLAR QUANTITY OF FROM 2 1/4 TO 4 1/2 TIMES THAT OF THE HYDRAZINE.
Claim 2
Dependent Claim
54 words
A COMPOSITION FOR USE AS A SOLDERING FLUX COMPRISING A WATER SOLUTION CONSISTING ESSENTIALLY OF AT LEAST 1 MOLE PER LITER OF HYDRAZINE ACETATE, AND AN EXCESS OF ACETIC ACID, THE COMBINED AND FREE ACETIC ACID BEING PRESENT IN A MOLAR QUANTITY OF FROM 2 1/4 TO 4 1/2 TIMES THAT OF THE HYDRAZINE.
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) | 1968-12-13 | 1969-06-14 | 1969-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-13 | 1973-06-14 | 1973-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-13 | 1977-06-14 | 1977-12-14 | $7700.00 | Window Closed / Lapsed |