Patent US2500349A successfully refreshed from Google Patents.
US2500349A
Expired / Lapsed
US
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Process for breaking petroleum emulsions
Assignee: Baker Petrolite LLC
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Filing: 1948-04-17
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Granted: 1950-03-14
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Expires: 1968-04-17
Abstract
No abstract record available.
Inventors
- 👤 Groote Melvin De
- 👤 Keiser Bernhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:58
CPC Classifications
C; C10; C10G; C10G33/00; C10G33/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
A PROCESS FOR BREAKING PETROLEUM EMULSIONS OF THE WATER-IN-OIL TYPE, CHARACTERIZED BY SUBJECTING THE EMULSION TO THE ACTION OF A DEMULSIFIER INCLUDING A HYDROPHILE HYDROXY-POLYALKOXY COMPOUND OBTAINED BY THE ACTION OF AN ALKYLENE OXIDE CONTAINING A REACTIVE ETHYLENE OXIDE RING AND HAVING NOT OVER 4 CARBON ATOMS, ON A STEARIC ACID PARTIAL ESTER OF A POLYHYDRIC ALCOHOL, SELECTED FROM THE GROUP CONSISTING OF PENTAERYTHRITOL, POLYPENTAERYTHRITOLS, AND MIXTURES THEREOF, THE MOLAR PROPORTIONS OF THE PARTIAL ESTER AND ALKYLENE OXIDE BEING IN THE RANGE OF FROM ABOUT 1:3 TO ABOUT 1:60.
Claim 2
Dependent Claim
89 words
A PROCESS FOR BREAKING PETROLEUM EMULSIONS OF THE WATER-IN-OIL TYPE, CHARACTERIZED BY SUBJECTING THE EMULSION TO THE ACTION OF A DEMULSIFIER INCLUDING A HYDROPHILE HYDROXY-POLYALKOXY COMPOUND OBTAINED BY THE ACTION OF AN ALKYLENE OXIDE CONTAINING A REACTIVE ETHYLENE OXIDE RING AND HAVING NOT OVER 4 CARBON ATOMS, ON A STEARIC ACID PARTIAL ESTER OF A POLYHYDRIC ALCOHOL, SELECTED FROM THE GROUP CONSISTING OF PENTAERYTHRITOL, POLYPENTAERYTHRITOLS, AND MIXTURES THEREOF, THE MOLAR PROPORTIONS OF THE PARTIAL ESTER AND ALKYLENE OXIDE BEING IN THE RANGE OF FROM ABOUT 1:3 TO ABOUT 1:60.
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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) | 1953-03-13 | 1953-09-12 | 1954-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-13 | 1957-09-12 | 1958-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-13 | 1961-09-12 | 1962-03-14 | $7700.00 | Window Closed / Lapsed |