Patent US3196113A successfully refreshed from Google Patents.
US3196113A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Removal of flux from brazed aluminum assemblies
Assignee: —
•
Filing: —
•
Granted: 1965-07-20
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Expires: 1982-07-20
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:04
CPC Classifications
—
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
THE PROCESS OF REMOVING A CHLORIDE-FLUORIDE CONTAINING FLUX FROM JOINED ALUMINOUS METAL MEMBERS COMPRISING, REMOVING FLUX RESIDUES FROM THE BRAZED ASSEMBLY BY IMMERSING THE BRAZED ASSEMBLY IN AN AQUEOUS ACID SOLUTION CONSISTING ESSENTIALLY OF WATER, 5-40%, BY WEIGHT, NITRIC ACID AND A LESSER AMOUNT BUT AT LEAST 0.05%, BY WEIGHT, OF AT LEAST ONE ORGANIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF THIOUREA, TRIETHANOLAMINE SALT OF LAURYLSULFOBENZOIC ACID, NICOTINE SULFATE, AND HEXAMETHYLENETETRAMINE.
Claim 2
Dependent Claim
72 words
THE PROCESS OF REMOVING A CHLORIDE-FLUORIDE CONTAINING FLUX FROM JOINED ALUMINOUS METAL MEMBERS COMPRISING, REMOVING FLUX RESIDUES FROM THE BRAZED ASSEMBLY BY IMMERSING THE BRAZED ASSEMBLY IN AN AQUEOUS ACID SOLUTION CONSISTING ESSENTIALLY OF WATER, 5-40%, BY WEIGHT, NITRIC ACID AND A LESSER AMOUNT BUT AT LEAST 0.05%, BY WEIGHT, OF AT LEAST ONE ORGANIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF THIOUREA, TRIETHANOLAMINE SALT OF LAURYLSULFOBENZOIC ACID, NICOTINE SULFATE, AND HEXAMETHYLENETETRAMINE.
References Cited (Backward Citations)
US1719168A
Cited
GB458163A
Cited
US2756131A
Cited
US2683736A
Cited
US2947703A
Cited
US3074824A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-07-19 | 1969-01-18 | 1969-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-19 | 1973-01-18 | 1973-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-19 | 1977-01-18 | 1977-07-20 | $7700.00 | Window Closed / Lapsed |