US2677666A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for removing contaminants from crude oils
Assignee: Sunoco Inc
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Filing: 1951-12-29
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Granted: 1954-05-04
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Expires: 1971-12-29
Abstract
No abstract record available.
Inventors
- 👤 Patrick F Dougherty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:54
CPC Classifications
C; C10; C10G; C10G33/00; C10G33/06; C10G31/00; C10G31/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
PROCESS FOR REMOVING CONTAMINANTS FROM PETROLEUM CRUDE OIL WHICH COMPRISES FORMING AN EMULSION OF CRUDE OIL, WATER, AND AN ADDED DEEMULSIFYING AGENT, INTRODUCING SAID EMULSION INTO AN UNDERGROUND SALT CAVITY, MAINTAINING SAID EMULSION AT A DE-EMULSIFYING TEMPERATURE THEREIN IN CONTACT WITH THE SALT SURFACE OF SAID CAVITY WHEREBY OIL AND WATER SEPARATE TO FORM A LOWER WATER LAYER, DISSOLVING SALT FORM THE SURFACE OF TE CAVITY BOTTOM WITH SAID LOWER WATER LAYER WHERBY THE DIFFERENCE IN DENSITIES OF THE WATER LAYER AND THE OIL LAYER IS INCREASED, AND RECOVERING FROM SAID SALT CAVITY CRUDE OIL HAVING A DECREASED QUANTITY OF CONTAMINANTS.
Claim 2
Dependent Claim
101 words
PROCESS FOR REMOVING CONTAMINANTS FROM PETROLEUM CRUDE OIL WHICH COMPRISES FORMING AN EMULSION OF CRUDE OIL, WATER, AND AN ADDED DEEMULSIFYING AGENT, INTRODUCING SAID EMULSION INTO AN UNDERGROUND SALT CAVITY, MAINTAINING SAID EMULSION AT A DE-EMULSIFYING TEMPERATURE THEREIN IN CONTACT WITH THE SALT SURFACE OF SAID CAVITY WHEREBY OIL AND WATER SEPARATE TO FORM A LOWER WATER LAYER, DISSOLVING SALT FORM THE SURFACE OF TE CAVITY BOTTOM WITH SAID LOWER WATER LAYER WHERBY THE DIFFERENCE IN DENSITIES OF THE WATER LAYER AND THE OIL LAYER IS INCREASED, AND RECOVERING FROM SAID SALT CAVITY CRUDE OIL HAVING A DECREASED QUANTITY OF CONTAMINANTS.
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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) | 1957-05-03 | 1957-11-02 | 1958-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-03 | 1961-11-02 | 1962-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-03 | 1965-11-02 | 1966-05-04 | $7700.00 | Window Closed / Lapsed |