Patent US2916449A successfully refreshed from Google Patents.
US2916449A
Expired / Lapsed
US
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Lubricating compositions
Assignee: Sinclair Refining Co
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Filing: 1957-07-22
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Granted: 1959-12-08
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Expires: 1977-07-22
Abstract
No abstract record available.
Inventors
- 👤 Ernest R Vierk
- 👤 Theodore J Karr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:35
CPC Classifications
C; C10; C10M; C10M163/00; C10M137/00; C10M137/02; C10M137/04; C10M137/10; C10M159/00; C10M159/12; C10M159/20; C10M159/24; C10M2219/00; C10M2219/04; C10M2219/044; C10M2219/046; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/041; C10M2223/042; C10M2223/045; C10M2229/00; C10M2229/02; C10M2229/04; C10M2229/05; C10N; C10N2010/00; C10N2010/04; C10N2020/00; C10N2020/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
A LUBRICANT COMPOSITION CONSISTING ESSENTIALLY OF ABOUT 75 TO 99 WEIGHT PERCENT OF A MINERAL LUBRICATING OIL, ABOUT 0.3 TO 5 WEIGHT PERCENT OF A SULFONATE SELECTED FROM THE GROUP CONSISTING OF CALCIUM MAHOGANY PETROLEUM SULFONATES FAND BARIUM MAHOGANY PETROLEUM SULFONATES, ABOUT 0.5 TO 1.8 WEIGHT PERCENT OF ZINC DIALKYL DITHIOPHOSPHATE CONTAINING ABOUT 3 TO 18 CARBON ATOMS IN THE ORGANIC RADICALS AND ABOUT 0.3 TO 3.5 WEIGHT PERCENT OF ALKYL PHENYL PHOSPHATE IN WHICH EACH ALKYL CHAIN PRESENT CONTAINS ABOUT 3 TO 18 CARBON ATOMS, SAID COMPOSITION HAVING A VISCOSITY INDEX OF AT LEAST ABOUT 85 AND A VISCOSITY (SUS) AT 100*F. OF ABOUT 650 TO 1000.
Claim 2
Dependent Claim
108 words
A LUBRICANT COMPOSITION CONSISTING ESSENTIALLY OF ABOUT 75 TO 99 WEIGHT PERCENT OF A MINERAL LUBRICATING OIL, ABOUT 0.3 TO 5 WEIGHT PERCENT OF A SULFONATE SELECTED FROM THE GROUP CONSISTING OF CALCIUM MAHOGANY PETROLEUM SULFONATES FAND BARIUM MAHOGANY PETROLEUM SULFONATES, ABOUT 0.5 TO 1.8 WEIGHT PERCENT OF ZINC DIALKYL DITHIOPHOSPHATE CONTAINING ABOUT 3 TO 18 CARBON ATOMS IN THE ORGANIC RADICALS AND ABOUT 0.3 TO 3.5 WEIGHT PERCENT OF ALKYL PHENYL PHOSPHATE IN WHICH EACH ALKYL CHAIN PRESENT CONTAINS ABOUT 3 TO 18 CARBON ATOMS, SAID COMPOSITION HAVING A VISCOSITY INDEX OF AT LEAST ABOUT 85 AND A VISCOSITY (SUS) AT 100*F. OF ABOUT 650 TO 1000.
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) | 1962-12-07 | 1963-06-08 | 1963-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-07 | 1967-06-08 | 1967-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-07 | 1971-06-08 | 1971-12-08 | $7700.00 | Window Closed / Lapsed |