US2725340A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clarification of oils
Assignee: Standard Oil Co
•
Filing: 1954-01-25
•
Granted: 1955-11-29
•
Expires: 1974-01-25
Abstract
No abstract record available.
Inventors
- 👤 Gordon Moses
- 👤 Homer M Schauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:38
CPC Classifications
C; C10; C10G; C10G31/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
129 words
A REFINING PROCESS WHICH COMPRISES (1) TREATING A PETROLEUM DISTILLATE BOILING IN THE HEAVIER-THAN-GASOLINE RANGE WITH AQUEOUS CAUSTIC, (2) SEPARATING AN AQUEOUS CAUSTIC PHASE FROM AN OIL PHASE CONSISTING OF TREATED OIL AND A HAZE-FORMING DISPERSION OF AQUEOUS CAUSTIC DROPLETS, (3) ADDING AIR, IN AN AMOUNT BETWEEN ABOUT 3 AND ABOUT 5 STANDARD CUBIC FEET PER BARREL OF HAZY OIL, TO A FLOWING STREAM OF HAZY OIL, (4) PASSING THE AIR-OIL STREAM INTO AN ENLARGED SETTLING ZONE, MAINTAINED AT A TEMPERATURE BETWEEN ABOUT 80* AND 110* F., (5) MAINTAINING THE AIR-OIL STREAM IN SAID ZONE FOR A TIME BETWEEN ABOUT 5 AND ABOUT 10 HOURS AND (6) WITHDRAWING FROM SAID ZONE A SEPARATE AQUEOUS PHASE FORMED BY AGGLOMERATION OF HAZE DROPLETS AND WITHDRAWING CONTINUOUSLY A SUBSTANTIALLY HAZE-FREE TREATED OIL.
References Cited (Backward Citations)
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US2154189A
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US2303077A
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US2335006A
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US2361455A
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US2656380A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-11-28 | 1959-05-30 | 1959-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-28 | 1963-05-30 | 1963-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-28 | 1967-05-30 | 1967-11-29 | $7700.00 | Window Closed / Lapsed |