Patent US3523769A successfully refreshed from Google Patents.
US3523769A
Expired / Lapsed
US
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Mono-substituted hydrocarbon fuel additives
Assignee: Phillips Petroleum Co
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Filing: 1966-07-25
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Granted: 1970-08-11
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Expires: 1986-07-25
Abstract
No abstract record available.
Inventors
- 👤 James W Tooke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:15
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L1/222; C10L1/2222; C10L1/223
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2333294A
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US2324118A
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US2447615A
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US2653862A
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US2758916A
Cited
US2891850A
Cited
US3355490A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-10 | 1974-02-09 | 1974-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-10 | 1978-02-09 | 1978-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-10 | 1982-02-09 | 1982-08-11 | $7700.00 | Window Closed / Lapsed |