US2850461A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solvent compositions containing anti-corrosion agents
Assignee: Universal Oil Products Co
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Filing: 1955-12-16
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Granted: 1958-09-02
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Expires: 1975-12-16
Abstract
No abstract record available.
Inventors
- 👤 Herman S Bloch
- 👤 Ernest L Pollitzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:29
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/08; C23F11/10; C23F11/14; C23F11/141
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
A SOLVENT COMPOSITION CAPABLE OF MAINTAINING METALLIC SURFACES IN CONTACT WITH THE SOLVENT IN BOTH ITS LIQUID ANBD VAPOR PHASES RESISTANT TO CORROSION CONSISTING ESSENTIALLY OF A SOLUTION OF: (1) A MAJOR PROPORTION OF AN OXYGEN-CONTAINING ORGANIC SOLVENT, (2) FROM 0 TO ABOUT 20% BY WEIGHT OF WATER, (3) FROM 0.001 TO ABOUT 0.5% BY WEIGHT OF A NITROGEN-CONTAINING ORGANIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF THE AMINES, THE AMINE SALTS OF FATTY ACIDS AND THE FATTY ACID AMIDES OF LESSER VOLATITY THAN SAID SOLVENT, AND (4) FROM 0.001 TO ABOUT 0.5% BY WEIGHT OF A PH-STABILIZING AMINE HAVING A VOLATILITY AT LEAST EQUAL TO THAT OF SAID SOLVENT.
Claim 2
Dependent Claim
110 words
A SOLVENT COMPOSITION CAPABLE OF MAINTAINING METALLIC SURFACES IN CONTACT WITH THE SOLVENT IN BOTH ITS LIQUID ANBD VAPOR PHASES RESISTANT TO CORROSION CONSISTING ESSENTIALLY OF A SOLUTION OF: (1) A MAJOR PROPORTION OF AN OXYGEN-CONTAINING ORGANIC SOLVENT, (2) FROM 0 TO ABOUT 20% BY WEIGHT OF WATER, (3) FROM 0.001 TO ABOUT 0.5% BY WEIGHT OF A NITROGEN-CONTAINING ORGANIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF THE AMINES, THE AMINE SALTS OF FATTY ACIDS AND THE FATTY ACID AMIDES OF LESSER VOLATITY THAN SAID SOLVENT, AND (4) FROM 0.001 TO ABOUT 0.5% BY WEIGHT OF A PH-STABILIZING AMINE HAVING A VOLATILITY AT LEAST EQUAL TO THAT OF SAID SOLVENT.
References Cited (Backward Citations)
US2582138A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-01 | 1962-03-03 | 1962-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-01 | 1966-03-03 | 1966-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-01 | 1970-03-03 | 1970-09-02 | $7700.00 | Window Closed / Lapsed |