US3146203A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ocatane requirement increase reducing fuel and lubricant compositions
Assignee: Shell USA Inc
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Filing: 1961-11-20
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Granted: 1964-08-25
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Expires: 1981-11-20
Abstract
No abstract record available.
Inventors
- 👤 Jr Duncan W Frew
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:52
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L1/232; C10L1/233; C10L1/26; C10L1/2608; C10L1/2633; C10L1/30; C10L1/305
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
AN IMPROVED FUEL COMPOSITION FOR USE IN INTERNAL COMBUSTION ENGINES CONSISTING ESSENTIALLY OF A STABLE GASOLINE BOILING BETWEEN ABOUT 30*F. AND 425*F. CONTAINING AN OCTANE NUMBER-IMPROVING AMOUNT OF AN ORGANOMETALLIC PRIMARY ANTIKNOCK AGENT, A MINOR AMOUNT OF AN IGNITION CONTROL ADDITIVE SELECTED FROM THE GROUP CONSISTING OF PHOSPHORUS AND BORON COMPOUNDS AND MIXTURES THEREOF, AND FROM ABOUT 0.01 TO ABOUT 5.0% BY WEIGHT OF A GASOLINE-SOLUBLE, ALKYL-SUBSTITUTED 2-OXAZOLIDONE COMPOSED SOLELY OF CARBON, HYDROGEN, NITROGEN AND OXYGEN HAVING THE STRUCTURAL FORMULA
Claim 2
Dependent Claim
80 words
AN IMPROVED FUEL COMPOSITION FOR USE IN INTERNAL COMBUSTION ENGINES CONSISTING ESSENTIALLY OF A STABLE GASOLINE BOILING BETWEEN ABOUT 30*F. AND 425*F. CONTAINING AN OCTANE NUMBER-IMPROVING AMOUNT OF AN ORGANOMETALLIC PRIMARY ANTIKNOCK AGENT, A MINOR AMOUNT OF AN IGNITION CONTROL ADDITIVE SELECTED FROM THE GROUP CONSISTING OF PHOSPHORUS AND BORON COMPOUNDS AND MIXTURES THEREOF, AND FROM ABOUT 0.01 TO ABOUT 5.0% BY WEIGHT OF A GASOLINE-SOLUBLE, ALKYL-SUBSTITUTED 2-OXAZOLIDONE COMPOSED SOLELY OF CARBON, HYDROGEN, NITROGEN AND OXYGEN HAVING THE STRUCTURAL FORMULA
References Cited (Backward Citations)
US1692784A
Cited
US2932675A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-08-25 | 1968-02-24 | 1968-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-25 | 1972-02-24 | 1972-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-25 | 1976-02-24 | 1976-08-25 | $7700.00 | Window Closed / Lapsed |