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US3522023A
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US
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Phosphorous additive-lead extender formulation with positive synergistic octane appeciation
Assignee: Marathon Oil Co
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Filing: 1967-09-13
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Granted: 1970-07-28
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Expires: 1987-09-13
Abstract
No abstract record available.
Inventors
- 👤 Charles J Norton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:01
CPC Classifications
C; C10; C10L; C10L10/00; C10L10/10; C10L1/00; C10L1/10; C10L1/12; C10L1/1283; C10L1/14; C10L1/22; C10L1/222; C10L1/223; C10L1/30; C10L1/305; C10L1/306
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2794717A
Cited
GB880457A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-07-27 | 1974-01-26 | 1974-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-07-27 | 1978-01-26 | 1978-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-07-27 | 1982-01-26 | 1982-07-28 | $7700.00 | Window Closed / Lapsed |