US2614966A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sodium refining of petroleum oils
Assignee: Standard Oil Development Co
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Filing: 1950-05-01
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Granted: 1952-10-21
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Expires: 1970-05-01
Abstract
No abstract record available.
Inventors
- 👤 Byron M Vanderbilt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:35
CPC Classifications
C; C10; C10G; C10G29/00; C10G29/02; C10G19/00; C10G29/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
THE PROCESS OF IMPROVING THE OXIDATION STABILITY OF PETROLEUM OILS IN WHICH THE OIL TO BE TREATED IS MAINTAINED AT A TEMPERATURE ABOVE ABOUT 150* C. AND IS CONTACTED IN LIQUID PHASE WITH ABOUT 0.25 TO 2.0% OF FINELY DIVIDED SODIUM AND ABOUT 5 TO 30 MOL PER CENT OF AN ACTIVATOR BASED ON THE QUANTITY OF SODIUM, SAID ACTIVATOR BEING A COMPOUND SELECTED FROM THE GROUP CONSISTING OF ETHERS AND KETONES.
Claim 2
Dependent Claim
72 words
THE PROCESS OF IMPROVING THE OXIDATION STABILITY OF PETROLEUM OILS IN WHICH THE OIL TO BE TREATED IS MAINTAINED AT A TEMPERATURE ABOVE ABOUT 150* C. AND IS CONTACTED IN LIQUID PHASE WITH ABOUT 0.25 TO 2.0% OF FINELY DIVIDED SODIUM AND ABOUT 5 TO 30 MOL PER CENT OF AN ACTIVATOR BASED ON THE QUANTITY OF SODIUM, SAID ACTIVATOR BEING A COMPOUND SELECTED FROM THE GROUP CONSISTING OF ETHERS AND KETONES.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-10-21 | 1956-04-21 | 1956-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-21 | 1960-04-21 | 1960-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-21 | 1964-04-21 | 1964-10-21 | $7700.00 | Window Closed / Lapsed |