US2662815A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxidation inhibitors
Assignee: Standard Oil Development Co
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Filing: 1949-01-07
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Granted: 1953-12-15
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Expires: 1969-01-07
Abstract
No abstract record available.
Inventors
- 👤 Harry W Rudel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:48
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L1/222; C10L1/223; C10L1/2235; C10L1/23; C10L1/231; C10M2215/00; C10M2215/02; C10M2215/06; C10M2215/062; C10M2215/064; C10M2215/20; C10M2215/204; C10N; C10N2040/00; C10N2040/135
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
33 words
A HYDROCARBON COMPOSITION NORMALLY CHARACTERIZED BY OXIDATION INSTABILITY, AND CHOSEN FROM THE CLASS CONSISTING OF GASOLINE, LUBRICATING OIL AND TURBINE OIL, IN WHICH IS DISSOLVED AN OXIDATION INHIBITING QUANTITY OF N-NITROSO DIPHENYL AMINE.
Claim 2
Dependent Claim
33 words
A HYDROCARBON COMPOSITION NORMALLY CHARACTERIZED BY OXIDATION INSTABILITY, AND CHOSEN FROM THE CLASS CONSISTING OF GASOLINE, LUBRICATING OIL AND TURBINE OIL, IN WHICH IS DISSOLVED AN OXIDATION INHIBITING QUANTITY OF N-NITROSO DIPHENYL AMINE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-12-14 | 1957-06-15 | 1957-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-14 | 1961-06-15 | 1961-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-14 | 1965-06-15 | 1965-12-15 | $7700.00 | Window Closed / Lapsed |