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Patent US3220892A successfully refreshed from Google Patents.
US3220892A
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Soldering fluxes
Assignee: Individual
•
Filing: 1963-08-12
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Granted: 1965-11-30
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Expires: 1983-08-12
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 13:24
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/36; B23K35/3612; B23K35/3618
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
51 words
A SOLDERING FLUX CONSISTING ESSENTIALLY OF A WATER SOLUTION OF A WATER-SOLUBLE SALT OF AN ACID, SAID ACID BEING SELECTED FROM THE GROUP CONSISTING OF THE MONOBASIC, DIBASIC AND TRIBASIC ORGANIC ACIDS HAVING MOLECULAR WEIGHTS OF FROM 60 TO 193 AND THE HYDROHALIDE ACIDS, AND A BASE HAVING THE GENERAL FORMULA
Claim 2
Dependent Claim
51 words
A SOLDERING FLUX CONSISTING ESSENTIALLY OF A WATER SOLUTION OF A WATER-SOLUBLE SALT OF AN ACID, SAID ACID BEING SELECTED FROM THE GROUP CONSISTING OF THE MONOBASIC, DIBASIC AND TRIBASIC ORGANIC ACIDS HAVING MOLECULAR WEIGHTS OF FROM 60 TO 193 AND THE HYDROHALIDE ACIDS, AND A BASE HAVING THE GENERAL FORMULA
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) | 1968-11-29 | 1969-05-31 | 1969-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-29 | 1973-05-31 | 1973-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-29 | 1977-05-31 | 1977-11-30 | $7700.00 | Window Closed / Lapsed |