Patent US2558512A successfully refreshed from Google Patents.
US2558512A
Expired / Lapsed
US
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Processes for breaking petroleum emulsions
Assignee: Baker Petrolite LLC
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Filing: 1949-11-01
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Granted: 1951-06-26
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Expires: 1969-11-01
Abstract
No abstract record available.
Inventors
- 👤 Groote Melvin De
- 👤 Arthur F Wirtel
- 👤 Owen H Pettingill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:32
CPC Classifications
C; C10; C10G; C10G33/00; C10G33/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
A PROCESS FOR BREAKING PETROLEUM EMULSION OF THE WATER-IN-OIL TYPE, CHARACTERIZED BY SUBJECTING THE EMULSION TO THE ACTION OF A DEMULSIFER INCLUDING AT LEAST ONE COGENERIC MIXTURE OF A HOMOLOGEOUS SERIES OF GLYCOL ETHERS OF PARA-CYCLOHEXYLCYCLOHEXANOL; SAID COGENERIC MIXTURE BEING DERIVED EXCULSIVELY FROM PARA-CYCLOHEXYLCYCLOHEXANOL, ETHYLENE OXIDE AND PROPYLENE OXIDE IN SUCH WEIGHT PROPORTIONS SO THAT THE AVERAGE COMPOSITION OF SAID COGENERIC MIXTURE STATED IN TERMS OF INITIAL REACTANTS LIES APPROXIMATELY WITHIN THE TRAPEZOIDAL AREA OF THE GRAPH IN THE ACCOMPANYING DRAWING DEFINED APPROXIMATELY BY POINTS 8, 9, 10 AND 11.
Claim 2
Dependent Claim
90 words
A PROCESS FOR BREAKING PETROLEUM EMULSION OF THE WATER-IN-OIL TYPE, CHARACTERIZED BY SUBJECTING THE EMULSION TO THE ACTION OF A DEMULSIFER INCLUDING AT LEAST ONE COGENERIC MIXTURE OF A HOMOLOGEOUS SERIES OF GLYCOL ETHERS OF PARA-CYCLOHEXYLCYCLOHEXANOL; SAID COGENERIC MIXTURE BEING DERIVED EXCULSIVELY FROM PARA-CYCLOHEXYLCYCLOHEXANOL, ETHYLENE OXIDE AND PROPYLENE OXIDE IN SUCH WEIGHT PROPORTIONS SO THAT THE AVERAGE COMPOSITION OF SAID COGENERIC MIXTURE STATED IN TERMS OF INITIAL REACTANTS LIES APPROXIMATELY WITHIN THE TRAPEZOIDAL AREA OF THE GRAPH IN THE ACCOMPANYING DRAWING DEFINED APPROXIMATELY BY POINTS 8, 9, 10 AND 11.
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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) | 1954-06-25 | 1954-12-25 | 1955-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-06-25 | 1958-12-25 | 1959-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-06-25 | 1962-12-25 | 1963-06-26 | $7700.00 | Window Closed / Lapsed |