Patent US3139330A successfully refreshed from Google Patents.
US3139330A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motor fuel
Assignee: Standard Oil Co
•
Filing: 1961-07-19
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Granted: 1964-06-30
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Expires: 1981-07-19
Abstract
No abstract record available.
Inventors
- 👤 Robert E Malec
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 01:31
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L1/222; C10L1/2222; C10L1/2227; C10L1/232
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
39 words
A MOTOR FUEL COMPOSITION COMPRISING A MAJOR PORPORTION OF A HYDROCARBON BASE FUEL DISTILLING WITHIN THE GASOLINE DISTILLATION RANGE AND FROM ABOUT 0.0005% TO ABOUT 0.5% OF A MIXTURE OF (1) A SUBSTITUTED PROPYLENE UREA HAVING THE GENERAL FORMULA
Claim 2
Dependent Claim
39 words
A MOTOR FUEL COMPOSITION COMPRISING A MAJOR PORPORTION OF A HYDROCARBON BASE FUEL DISTILLING WITHIN THE GASOLINE DISTILLATION RANGE AND FROM ABOUT 0.0005% TO ABOUT 0.5% OF A MIXTURE OF (1) A SUBSTITUTED PROPYLENE UREA HAVING THE GENERAL FORMULA
References Cited (Backward Citations)
US3011879A
Cited
US2991162A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-30 | 1967-12-30 | 1968-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-30 | 1971-12-30 | 1972-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-30 | 1975-12-30 | 1976-06-30 | $7700.00 | Window Closed / Lapsed |