Patent US3226324A successfully refreshed from Google Patents.
US3226324A
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US
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Lubricant composition containing phenothiazine and dipyridylamine
Assignee: Sinclair Research Inc
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Filing: 1962-02-19
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Granted: 1965-12-28
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Expires: 1982-02-19
Abstract
No abstract record available.
Inventors
- 👤 Daniel B Eickemeyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:47
CPC Classifications
C; C10; C10M; C10M3/00; C10M2207/00; C10M2207/10; C10M2207/12; C10M2207/121; C10M2207/123; C10M2207/129; C10M2207/22; C10M2207/28; C10M2207/281; C10M2207/282; C10M2207/283; C10M2207/284; C10M2207/285; C10M2207/286; C10M2207/30; C10M2207/302; C10M2207/304; C10M2207/34; C10M2209/00; C10M2209/10; C10M2209/102; C10M2209/103; C10M2209/104; C10M2209/105; C10M2209/11; C10M2209/111; C10M2209/112; C10M2215/00; C10M2215/22; C10M2215/221; C10M2215/225; C10M2215/226; C10M2215/24; C10M2215/30; C10M2219/00; C10M2219/10; C10M2219/104; C10M2219/108; C10M2227/00; C10M2227/06; C10M2227/065; C10M2229/00; C10M2229/04; C10M2229/041; C10N; C10N2030/00; C10N2030/08; C10N2040/00; C10N2040/12; C10N2040/13
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
A LUBRICANT COMPOSITION CONSISTING ESSENTIALLY OF AN ESTER-BASED SYNTHETIC FLUID OF LUBRICATING VISCOSITY ABOVE 0.01 TO 5% BY WEIGHT OF PHENOTHIAZINE AND ABOUT 0.01 TO 5% BY WEIGHT OF DIPYRIDYLAMINE AND SUFFICIENT TO RETARD OXIDATION OF SAID ESTER BASED SYNTHETIC FLUID AT TTEMPERATURES IN EXCESS OF 400*F., SAID ESTER BASED FLUID BEING AN ESTER OF AN ALKANOL OF 4 TO 12 CARBON ATOMS AND AN ALKANE CARBOXYLIC ACID OF 4 TO 12 CARBON ATOMS.
Claim 2
Dependent Claim
74 words
A LUBRICANT COMPOSITION CONSISTING ESSENTIALLY OF AN ESTER-BASED SYNTHETIC FLUID OF LUBRICATING VISCOSITY ABOVE 0.01 TO 5% BY WEIGHT OF PHENOTHIAZINE AND ABOUT 0.01 TO 5% BY WEIGHT OF DIPYRIDYLAMINE AND SUFFICIENT TO RETARD OXIDATION OF SAID ESTER BASED SYNTHETIC FLUID AT TTEMPERATURES IN EXCESS OF 400*F., SAID ESTER BASED FLUID BEING AN ESTER OF AN ALKANOL OF 4 TO 12 CARBON ATOMS AND AN ALKANE CARBOXYLIC ACID OF 4 TO 12 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) | 1968-12-27 | 1969-06-28 | 1969-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-27 | 1973-06-28 | 1973-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-27 | 1977-06-28 | 1977-12-28 | $7700.00 | Window Closed / Lapsed |