US2913413A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compositions for engine operation
Assignee: Ethyl Corp
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Filing: 1957-09-13
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Granted: 1959-11-17
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Expires: 1977-09-13
Abstract
No abstract record available.
Inventors
- 👤 Jerome E Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:22
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/12; C10L1/1233; C10L1/1241; C10L1/14; C10L1/20; C10L1/201; C10L1/30; C10L1/305; C10L1/306
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
19 words
A LIQUID HYDROCARBON CRANKCASE LUBRICATING OIL CONTAINING FROM ABOAUT 0.05 TO ABOUT 10.0 WEIGHT PERCENT MANGANESE AS MANAGANESE PENTACARBOXYL.
Claim 2
Dependent Claim
19 words
A LIQUID HYDROCARBON CRANKCASE LUBRICATING OIL CONTAINING FROM ABOAUT 0.05 TO ABOUT 10.0 WEIGHT PERCENT MANGANESE AS MANAGANESE PENTACARBOXYL.
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) | 1962-11-16 | 1963-05-18 | 1963-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-16 | 1967-05-18 | 1967-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-16 | 1971-05-18 | 1971-11-17 | $7700.00 | Window Closed / Lapsed |