Patent US2921901A successfully refreshed from Google Patents.
US2921901A
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Lubricating oil composition
Assignee: Standard Oil Co
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Filing: 1955-07-29
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Granted: 1960-01-19
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Expires: 1975-07-29
Abstract
No abstract record available.
Inventors
- 👤 Robert E Karll
- 👤 Albert R Sabol
- 👤 Eugene E Richardson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:46
CPC Classifications
C; C10; C10M; C10M159/00; C10M159/12; C10M159/20; C10M2205/00; C10M2207/00; C10M2207/02; C10M2207/021; C10M2207/023; C10M2207/027; C10M2207/028; C10M2207/28; C10M2207/282; C10M2207/34; C10M2209/00; C10M2209/10; C10M2209/103; C10M2223/00; C10M2223/12; C10M2225/00; C10M2225/04; C10M2225/041; C10N; C10N2010/00; C10N2010/04; C10N2010/06; C10N2010/08; C10N2010/12; C10N2010/14; C10N2010/16; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
159 words
A LUBRICANT COMPOSITION HAVING IMPROVED DETERGENCY PROPERTIES AND SUITABLE FOR USE IN AN INTERNAL CONBUSTION ENGINE OPERATING ON A HIGH SULFUR FUEL, SAID LUBRICATING COMPOSITION COMPRISING A MAJOR PROPORTION OF A LUBRICATING OIL AND IN COMBINATION THEREWITH AN AMOUNT WITHIN THE RANGE OF FROM ABOUT 0.001 TO ABOUT 10% SUFFICIENT TO IMPART DETERGENCY OF NEUTRALIZED PHOSPHORUS AND SULFUR-CONTAINING REACTION PRODUCT OF A PHOSPHORUS SULFIDE AND A BUTENE POLYMER OBTAINED BY REACTING A PHOSPHORUS SULFIDE WITH A BUTENE POLYMER AND SUBSEQUENTLY NEUTRALIZING THE REACTION PRODUCT WITH A BASIC REAGENT CONTAINING A METAL CONSTITUENT, AND FROM ABOUT 0.01% TO ABOUT 2% OF A COMPOUND PREPARED BY REACTING A BASIC METAL COMPOUND AND A MONOHYDROXY COMPOUND SELECTED FROM THE GROUP CONSISTING OF ALKYL ALCOHOLS HAVING FROM ABOUT 8 TO ABOUT 20 CARBON ATOMS AND ALKYL PHENOLS HAVING SAID ABOUT 12 TO ABOUT 26 CARBON ATOMS AND CONTACTING SAID REACTION PRODUCT WITH CARBON DIOXIDE AT A TEMPPERATURE OF FROM ABOUT 0*F. ABOUT 300*F.
Claim 2
Dependent Claim
159 words
A LUBRICANT COMPOSITION HAVING IMPROVED DETERGENCY PROPERTIES AND SUITABLE FOR USE IN AN INTERNAL CONBUSTION ENGINE OPERATING ON A HIGH SULFUR FUEL, SAID LUBRICATING COMPOSITION COMPRISING A MAJOR PROPORTION OF A LUBRICATING OIL AND IN COMBINATION THEREWITH AN AMOUNT WITHIN THE RANGE OF FROM ABOUT 0.001 TO ABOUT 10% SUFFICIENT TO IMPART DETERGENCY OF NEUTRALIZED PHOSPHORUS AND SULFUR-CONTAINING REACTION PRODUCT OF A PHOSPHORUS SULFIDE AND A BUTENE POLYMER OBTAINED BY REACTING A PHOSPHORUS SULFIDE WITH A BUTENE POLYMER AND SUBSEQUENTLY NEUTRALIZING THE REACTION PRODUCT WITH A BASIC REAGENT CONTAINING A METAL CONSTITUENT, AND FROM ABOUT 0.01% TO ABOUT 2% OF A COMPOUND PREPARED BY REACTING A BASIC METAL COMPOUND AND A MONOHYDROXY COMPOUND SELECTED FROM THE GROUP CONSISTING OF ALKYL ALCOHOLS HAVING FROM ABOUT 8 TO ABOUT 20 CARBON ATOMS AND ALKYL PHENOLS HAVING SAID ABOUT 12 TO ABOUT 26 CARBON ATOMS AND CONTACTING SAID REACTION PRODUCT WITH CARBON DIOXIDE AT A TEMPPERATURE OF FROM ABOUT 0*F. ABOUT 300*F.
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) | 1963-01-18 | 1963-07-20 | 1964-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-18 | 1967-07-20 | 1968-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-18 | 1971-07-20 | 1972-01-19 | $7700.00 | Window Closed / Lapsed |