US2930758A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ester-base lubricant containing anti-oxidant mixtures
Assignee: Texaco Inc
•
Filing: 1956-09-28
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Granted: 1960-03-29
•
Expires: 1976-09-28
Abstract
No abstract record available.
Inventors
- 👤 Raymond B Tierney
- 👤 Robert H Krug
- 👤 Ralph P Cheslnk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:19
CPC Classifications
C; C10; C10M; C10M3/00; C10M2207/00; C10M2207/28; C10M2207/282; C10M2207/30; C10M2207/302; C10M2207/304; C10M2207/34; C10M2209/00; C10M2209/10; C10M2209/103; C10M2209/104; C10M2215/00; C10M2215/02; C10M2215/06; C10M2215/062; C10M2215/064; C10M2215/065; C10M2215/066; C10M2219/00; C10M2219/06; C10M2219/08; C10M2219/082; C10M2219/084; C10M2219/10; C10M2219/104; C10M2219/108; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/041; C10M2229/00; C10M2229/02; C10M2229/04; C10M2229/041; C10M2229/05; C10N; C10N2030/00; C10N2030/08; C10N2040/00; C10N2040/12; C10N2040/13
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
A LUBRICATING OIL COMPOSITION HAVING IMPROVED ANTIOXIDANT PROPERTIES AT HIGH LUBRICATING TEMPERATURES CONSISTING OF AN ALKYL C,-C10 DIESTER OF THE DIMER OF LINOLEIC ACID AS THE BASE FLUID, FROM 0.5 TO 2% BY WEIGHT OF AN ANTI-OZIDANT COMBINATION COMPOSED OF FROM 40 TO 60% PHENOTHIAZINE AND FROM 60 TO 40% OF A MIXTURE OF ABOUT TWO PARTS N-PHENYL-BETA-NAPHTHYLAMINE, ONE PART N,N''DIPHENYL-P-PHENYLENE DIAMINE, AND ONE PART P-ISOPROPOXY DIPHENYLAMINE, AND FROM 1 TO 5 WEIGHT PERCENT OF DI(O-CHLOROPHENYL) PHENYL PHOSPHATE.
Claim 2
Dependent Claim
78 words
A LUBRICATING OIL COMPOSITION HAVING IMPROVED ANTIOXIDANT PROPERTIES AT HIGH LUBRICATING TEMPERATURES CONSISTING OF AN ALKYL C,-C10 DIESTER OF THE DIMER OF LINOLEIC ACID AS THE BASE FLUID, FROM 0.5 TO 2% BY WEIGHT OF AN ANTI-OZIDANT COMBINATION COMPOSED OF FROM 40 TO 60% PHENOTHIAZINE AND FROM 60 TO 40% OF A MIXTURE OF ABOUT TWO PARTS N-PHENYL-BETA-NAPHTHYLAMINE, ONE PART N,N''DIPHENYL-P-PHENYLENE DIAMINE, AND ONE PART P-ISOPROPOXY DIPHENYLAMINE, AND FROM 1 TO 5 WEIGHT PERCENT OF DI(O-CHLOROPHENYL) PHENYL PHOSPHATE.
References Cited (Backward Citations)
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US2529190A
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US2609343A
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US2722518A
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US2673184A
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US2815327A
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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) | 1963-03-29 | 1963-09-28 | 1964-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-29 | 1967-09-28 | 1968-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-29 | 1971-09-28 | 1972-03-29 | $7700.00 | Window Closed / Lapsed |