US3699053A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Functional fluid antioxidants
Assignee: Stauffer Chemical Co
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Filing: 1971-01-28
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Granted: 1972-10-17
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Expires: 1991-01-28
Abstract
Abstract AN ANTIOXIDANT COMPOSITION COMPRISING A MIXTURE OF: (A) A MONOACYLATED PHENYLENE DIAMINE OF THE FORMULA WHEREIN R1 AND R3 CAN EACH BE ALKYL, CYCLOALKYL, ARYL, ARALKYL OR ALKARYL; R2 CAN BE HYDROGEN, ALKYL, CYCLOALKYL, ARYL, ARALKYL OR ALKARYL; AND R4 CAN BE HYDROGEN, ALKYL, PHENYL, SUBSTITUTED ALKYL OR SUBSTITUTED PHENYL, AND (B) A SECONDARY ARYL AMINE IS DISCLOSED. THESE COMPOUNDS SHOW SUPERIOR AND UNEXPECTED HIGH TTEMPRATURE ANTIOXIDANT AND FLUID STABILIZING PROPERTIES WITH VERY LITTLE DEPOSIT FORMATION WHEN INCORPORATED INTO POLYCARBOXYLATE FUNCTIONAL FLUIDS. 1-(R1-N(-R2)-),4-(R4-CO-N(-R3)-)BENZENE
Inventors
- 👤 William F Gentit
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 10:42
CPC Classifications
C; C10; C10M; C10M3/00; C09; C09K; C09K15/00; C09K15/04; C09K15/20; C10M2207/00; C10M2207/28; C10M2207/281; C10M2207/282; C10M2207/283; C10M2207/286; C10M2207/34; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/084; C10M2209/10; C10M2209/103; C10M2209/109; C10M2215/00; C10M2215/02; C10M2215/06; C10M2215/064; C10M2215/065; C10M2215/08; C10M2215/082; C10M2215/14; C10M2215/22; C10M2215/221; C10M2215/225; C10M2215/226; C10M2215/24; C10M2215/28; C10M2215/30; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/042; C10M2223/043; C10M2223/06; C10M2223/063; C10M2223/065; C10M2229/00; C10M2229/04; C10M2229/041
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-17 | 1976-04-17 | 1976-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-17 | 1980-04-17 | 1980-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-17 | 1984-04-17 | 1984-10-17 | $7700.00 | Window Closed / Lapsed |