US2819220A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for breaking petroleum emulsions employing certain oxyalkylated pentaerythritols
Assignee: Baker Petrolite LLC
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Filing: 1954-05-24
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Granted: 1958-01-07
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Expires: 1974-05-24
Abstract
No abstract record available.
Inventors
- 👤 Groote Melvin De
- 👤 Owen H Pettingill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:22
CPC Classifications
C; C10; C10G; C10G33/00; C10G33/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 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 PENTAERYTHRITOL; SAID COGENERIC MIXTURE BEING DERIVED EXCLUSIVELY FROM PENTAERYTHRITOL ETHYLENE OXIDE AND BUTYLENE OXIDE IN SUCH WEIGHT PROPORTIONS SO THE AVERAGE COM-
Claim 2
Dependent Claim
53 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 PENTAERYTHRITOL; SAID COGENERIC MIXTURE BEING DERIVED EXCLUSIVELY FROM PENTAERYTHRITOL ETHYLENE OXIDE AND BUTYLENE OXIDE IN SUCH WEIGHT PROPORTIONS SO THE AVERAGE COM-
References Cited (Backward Citations)
US2527970A
Cited
US2507910A
Cited
US2662859A
Cited
US2624766A
Cited
US2617830A
Cited
US2574544A
Cited
US2677700A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-06 | 1961-07-08 | 1962-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-06 | 1965-07-08 | 1966-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-06 | 1969-07-08 | 1970-01-07 | $7700.00 | Window Closed / Lapsed |