Patent US2710283A successfully refreshed from Google Patents.
US2710283A
Expired / Lapsed
US
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Oil compositions
Assignee: Standard Oil Co
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Filing: 1951-09-26
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Granted: 1955-06-07
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Expires: 1971-09-26
Abstract
No abstract record available.
Inventors
- 👤 Linsk Jack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:49
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10M2203/00; C10M2203/10; C10M2203/108; C10M2207/00; C10M2207/40; C10M2207/404; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/086; C10M2209/10; C10M2209/103; C10M2209/109
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
A COMPOSITION COMPRISING A MAJOR PROPORTION OF A HYDROCARBON OIL AND A SMALL PROPORTION, SUFFICIENT TO IMPROVE THE VISCOSITY INDEX AND POURPOINT PROPERTIES OF SAID HYDROCARBON OIL, OF AN ESTER OF AN ALIPHATIC MONOHYDROXY ALCOHOL HAVING AT LEAST 2 CARBON ATOMS WITH A TRIPOLYMER, HAVING A MOLECULAR WEIGHT OF FROM ABOUT 5000 TO ABOUT 200,000, OF STYRENE, AN UNSATURATED POLYBASIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF MALEIC ACID, FUMARIC ACID, ACONITIC ACID, ITACONIC ACID, CITRACONIC ACID AND THE ANHYDRIDES THEREOF, AND AN ALKYL VINYL ETHER HAVING FROM ABOUT 2 TO ABOUT 18 CARBON ATOMS IN THE ALKYL GROUP, SAID STYRENE, UNSATURATED POLYBASIC COMPOUND, AND ALKYL VINYL ETHER BEING EMPLOYED IN THE MOLAR RATIO OF FROM ABOUT 1:10:9 TO 9:10:1.
Claim 2
Dependent Claim
120 words
A COMPOSITION COMPRISING A MAJOR PROPORTION OF A HYDROCARBON OIL AND A SMALL PROPORTION, SUFFICIENT TO IMPROVE THE VISCOSITY INDEX AND POURPOINT PROPERTIES OF SAID HYDROCARBON OIL, OF AN ESTER OF AN ALIPHATIC MONOHYDROXY ALCOHOL HAVING AT LEAST 2 CARBON ATOMS WITH A TRIPOLYMER, HAVING A MOLECULAR WEIGHT OF FROM ABOUT 5000 TO ABOUT 200,000, OF STYRENE, AN UNSATURATED POLYBASIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF MALEIC ACID, FUMARIC ACID, ACONITIC ACID, ITACONIC ACID, CITRACONIC ACID AND THE ANHYDRIDES THEREOF, AND AN ALKYL VINYL ETHER HAVING FROM ABOUT 2 TO ABOUT 18 CARBON ATOMS IN THE ALKYL GROUP, SAID STYRENE, UNSATURATED POLYBASIC COMPOUND, AND ALKYL VINYL ETHER BEING EMPLOYED IN THE MOLAR RATIO OF FROM ABOUT 1:10:9 TO 9:10:1.
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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) | 1958-06-06 | 1958-12-06 | 1959-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-06-06 | 1962-12-06 | 1963-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-06-06 | 1966-12-06 | 1967-06-07 | $7700.00 | Window Closed / Lapsed |