Patent US2908647A successfully refreshed from Google Patents.
US2908647A
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Pour point reduction
Assignee: Tide Water Oil Co
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Filing: 1954-01-28
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Granted: 1959-10-13
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Expires: 1974-01-28
Abstract
No abstract record available.
Inventors
- 👤 Vaughn Samuel Clyde
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:52
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L1/221; C10L1/24; C10L1/2493
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
A PROCESS FOR FORMING AN OIL-SOLUBLE REACTION PRODUCT SUITABLE FOR USE AS AN ADDITIVE WITH WHICH TO LOWER BELOW ZERO FAHRENHEIT THE POUR POINT OF A WAXY GAS OIL HAVING A BOILING RANGE BETWEEN 350*F. AND 750* F. WITHOUT THE NEED FOR USING SUBATMOSPHERIC PRESSURES, WHICH COMPRISES CONTACTING HYDROGENATED CASTOR OIL WITH A COMPOUND SELECTED FROM THE GROUP CONSISTING OF UREA AND THIOUREA FROM ABOUT ONE-HALF TO THREE HOURS AT A TEMPERATURE OF FROM ABOUT 350* F. TO ABOUT 600* F., SAID COMPOUND BEING ADDED IN A RATIO FROM 0.3 MOL TO 15 MOLS PER TWO MOLS OF THE HYDROGENATED CASTOR OIL, WHEREBY A REACTION PRODUCTS IS FORMED AS THE UPPER LAYER IN A REACTION MIXTURE, AND SEPARATING SAID REACTION PRODUCT FROM SAID MIXTURE.
Claim 2
Dependent Claim
124 words
A PROCESS FOR FORMING AN OIL-SOLUBLE REACTION PRODUCT SUITABLE FOR USE AS AN ADDITIVE WITH WHICH TO LOWER BELOW ZERO FAHRENHEIT THE POUR POINT OF A WAXY GAS OIL HAVING A BOILING RANGE BETWEEN 350*F. AND 750* F. WITHOUT THE NEED FOR USING SUBATMOSPHERIC PRESSURES, WHICH COMPRISES CONTACTING HYDROGENATED CASTOR OIL WITH A COMPOUND SELECTED FROM THE GROUP CONSISTING OF UREA AND THIOUREA FROM ABOUT ONE-HALF TO THREE HOURS AT A TEMPERATURE OF FROM ABOUT 350* F. TO ABOUT 600* F., SAID COMPOUND BEING ADDED IN A RATIO FROM 0.3 MOL TO 15 MOLS PER TWO MOLS OF THE HYDROGENATED CASTOR OIL, WHEREBY A REACTION PRODUCTS IS FORMED AS THE UPPER LAYER IN A REACTION MIXTURE, AND SEPARATING SAID REACTION PRODUCT FROM SAID MIXTURE.
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) | 1962-10-12 | 1963-04-13 | 1963-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-12 | 1967-04-13 | 1967-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-12 | 1971-04-13 | 1971-10-13 | $7700.00 | Window Closed / Lapsed |