US2792371A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for breaking petroleum emulsions employing certain oxyalkylated tetraethylene pentamines
Assignee: Baker Petrolite LLC
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Filing: 1954-09-15
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Granted: 1957-05-14
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Expires: 1974-09-15
Abstract
No abstract record available.
Inventors
- 👤 Woodrow J Dickson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:13
CPC Classifications
C; C10; C10G; C10G33/00; C10G33/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
A PROCESS FOR BREAKING PETROLEUM EMULSIONS OF THE WATER-IN-OIL TYPE CHARACTERIZED BY SUBJECTING THE EMULSION TO A DEMULSIFYING AGENT INCLUDING A COGENERIC MIXTURE OF A HOMOLOGOUS SERIES OF GLYCOL ETHERS OF TETRAETHYLENE PENTAMINE; SAID COGENERIC MIXTURE BEING DERIVED EXCLUSIVELY FROM TETRAETHYLENE PENTAMINE, PROPYLENE OXIDE AND ETHYLENE OXIDE IN SUCH WEIGHT PROPORTION SO THE AVERAGE COMPOISTION OF SAID COGENERIC MIXTURE STATED IN TERMS OF THE INITIAL REACTANTS LIES APPROXIMATELY WITHIN THE TRAPEZOID OF THE ACCOMPANYING DRAWING IN WICH THE MINIMUM TETRAETHYLENE PENTAMINE CONTENT IS AT LEAST 1.75% AND WHICH TRAPEZOID IS IDENTIFIED BY THE FACT THAT ITS AREA LIES WITHIN THE STRAIGHT LINES A,B,F,E.
Claim 2
Dependent Claim
103 words
A PROCESS FOR BREAKING PETROLEUM EMULSIONS OF THE WATER-IN-OIL TYPE CHARACTERIZED BY SUBJECTING THE EMULSION TO A DEMULSIFYING AGENT INCLUDING A COGENERIC MIXTURE OF A HOMOLOGOUS SERIES OF GLYCOL ETHERS OF TETRAETHYLENE PENTAMINE; SAID COGENERIC MIXTURE BEING DERIVED EXCLUSIVELY FROM TETRAETHYLENE PENTAMINE, PROPYLENE OXIDE AND ETHYLENE OXIDE IN SUCH WEIGHT PROPORTION SO THE AVERAGE COMPOISTION OF SAID COGENERIC MIXTURE STATED IN TERMS OF THE INITIAL REACTANTS LIES APPROXIMATELY WITHIN THE TRAPEZOID OF THE ACCOMPANYING DRAWING IN WICH THE MINIMUM TETRAETHYLENE PENTAMINE CONTENT IS AT LEAST 1.75% AND WHICH TRAPEZOID IS IDENTIFIED BY THE FACT THAT ITS AREA LIES WITHIN THE STRAIGHT LINES A,B,F,E.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-05-13 | 1960-11-12 | 1961-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-05-13 | 1964-11-12 | 1965-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-05-13 | 1968-11-12 | 1969-05-14 | $7700.00 | Window Closed / Lapsed |