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US2964474A
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Lubricating oil resistant to cold sludge formation
Assignee: Standard Oil Co
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Filing: 1956-12-31
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Granted: 1960-12-13
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Expires: 1976-12-31
Abstract
No abstract record available.
Inventors
- 👤 Harvey E Alford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:38
CPC Classifications
C; C10; C10M; C10M163/00; C10M2201/00; C10M2201/06; C10M2201/062; C10M2219/00; C10M2219/04; C10M2219/044; C10M2219/046; C10M2219/08; C10M2219/082; C10M2219/083; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/045; C10N; C10N2010/00; C10N2010/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
AN ADDITIVE FOR A MINERAL LUBRICATING OIL FOR THE LESSENING OF COLD SLUDGE FORMATION IN OPERATION OF A LUBRICATING OIL AT LOW TEMPERATURE,CONSISTING ESSENTIALLY OF 20 TO 60 PARTS BY WEIGHT BARIUM OCTADECYL SULFONATE, FROM 10 TO 30 PARTS BY WEIGHT BARIUM CARBONATE, FROM 15 TO 45 PARTS BY WEIGHT ZINC OCTYL DITHIOPHOSPHATE, AND FROM 8 TO 70 PARTS BY WEIGHT OF AN ORGANIC DISULFIDE HAVING THE FORMULA RSSR, WHERE R IS A HYDROCARBON GROUP HAVING FROM 3 TO 18 CARBON ATOMS.
Claim 2
Dependent Claim
82 words
AN ADDITIVE FOR A MINERAL LUBRICATING OIL FOR THE LESSENING OF COLD SLUDGE FORMATION IN OPERATION OF A LUBRICATING OIL AT LOW TEMPERATURE,CONSISTING ESSENTIALLY OF 20 TO 60 PARTS BY WEIGHT BARIUM OCTADECYL SULFONATE, FROM 10 TO 30 PARTS BY WEIGHT BARIUM CARBONATE, FROM 15 TO 45 PARTS BY WEIGHT ZINC OCTYL DITHIOPHOSPHATE, AND FROM 8 TO 70 PARTS BY WEIGHT OF AN ORGANIC DISULFIDE HAVING THE FORMULA RSSR, WHERE R IS A HYDROCARBON GROUP HAVING FROM 3 TO 18 CARBON ATOMS.
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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) | 1963-12-13 | 1964-06-13 | 1964-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-13 | 1968-06-13 | 1968-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-13 | 1972-06-13 | 1972-12-13 | $7700.00 | Window Closed / Lapsed |