US2964473A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Additive for minimizing cold sludge formation and lubricating oil containing the same
Assignee: Standard Oil Co
•
Filing: 1956-12-24
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Granted: 1960-12-13
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Expires: 1976-12-24
Abstract
No abstract record available.
Inventors
- 👤 Everett C Hughes
- 👤 Amherst Harvey E Alford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:34
CPC Classifications
C; C10; C10M; C10M167/00; C10M2201/00; C10M2201/06; C10M2201/062; C10M2203/00; C10M2203/10; C10M2209/00; C10M2209/10; C10M2209/103; C10M2209/104; C10M2209/105; C10M2209/107; C10M2219/00; C10M2219/04; C10M2219/046; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/045; C10N; C10N2010/00; C10N2010/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
AN ADDITIVE FOR A MINERAL LUBRICATING OIL FOR THE LESSENING OF COLD SLUDGE FORMATION IN OPERATION OF A LUBRICATING OIL AT LOW TEMPERATURES, CONSISTING ESSENTIALLY OF FROM 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 2 TO 16 PARTS BY WEIGHT OF AN OIL-SOLUBLE POLYOXYALKYLENE COMPOUND HAVING THE FORMULA
Claim 2
Dependent Claim
71 words
AN ADDITIVE FOR A MINERAL LUBRICATING OIL FOR THE LESSENING OF COLD SLUDGE FORMATION IN OPERATION OF A LUBRICATING OIL AT LOW TEMPERATURES, CONSISTING ESSENTIALLY OF FROM 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 2 TO 16 PARTS BY WEIGHT OF AN OIL-SOLUBLE POLYOXYALKYLENE COMPOUND HAVING THE FORMULA
References Cited (Backward Citations)
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US2501731A
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US2623016A
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US2671758A
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US2676925A
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US2839469A
Cited
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 |