US2742349A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synergistic stabilizing compositions
Assignee: Ethyl Corp
•
Filing: 1952-02-25
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Granted: 1956-04-17
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Expires: 1972-02-25
Abstract
No abstract record available.
Inventors
- 👤 James B Mccoy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:27
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L1/222; C10L1/223; C10L1/232
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
GASOLINE NORMALLY TENDING TO DETERIORATE IN THE PRESENCE OF OXYGEN CONTAINING, IN AMOUNT SUFFICIENT TO INHIBIT SUCH DETERIORATION, A SMALL ANTIOXIDANT QUANTITY OF A MIXTURE OF (1) A MATERIAL SELECTED FROM THE GROUP CONSISTING OF PIPEAZINE AND PIPEAZINE SUBSTITUTED ON AT LEAST ONE NITROGEN ATOM WITH A RADICAL SELECTED FROM THE GROUP CONSISTING OF HYDROCARBON GROUPS AND CARBALKOXY GROUPS, AND (2) N,N''-DI-SEC-BUTYL-P-PHENYLENEDIAMINE, SAID MATERIAL BEING PRESENT IN SAID MIXTURE IN AMOUNT BETWEEN ABOUT 30 TO 100 PARTS BY WEIGHT PER 100 PARTS BY WEIGHT OF SAID N,N''-DI-SEC-BUTYL-P-PHENYLENEDIAMINE.
Claim 2
Dependent Claim
87 words
GASOLINE NORMALLY TENDING TO DETERIORATE IN THE PRESENCE OF OXYGEN CONTAINING, IN AMOUNT SUFFICIENT TO INHIBIT SUCH DETERIORATION, A SMALL ANTIOXIDANT QUANTITY OF A MIXTURE OF (1) A MATERIAL SELECTED FROM THE GROUP CONSISTING OF PIPEAZINE AND PIPEAZINE SUBSTITUTED ON AT LEAST ONE NITROGEN ATOM WITH A RADICAL SELECTED FROM THE GROUP CONSISTING OF HYDROCARBON GROUPS AND CARBALKOXY GROUPS, AND (2) N,N''-DI-SEC-BUTYL-P-PHENYLENEDIAMINE, SAID MATERIAL BEING PRESENT IN SAID MIXTURE IN AMOUNT BETWEEN ABOUT 30 TO 100 PARTS BY WEIGHT PER 100 PARTS BY WEIGHT OF SAID N,N''-DI-SEC-BUTYL-P-PHENYLENEDIAMINE.
References Cited (Backward Citations)
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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) | 1959-04-17 | 1959-10-17 | 1960-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-17 | 1963-10-17 | 1964-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-17 | 1967-10-17 | 1968-04-17 | $7700.00 | Window Closed / Lapsed |