US3707362A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and composition for optimizing air-fuel ratio distribution in internal combustion engines
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1970-03-16
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Granted: 1972-12-26
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Expires: 1990-03-16
Abstract
Abstract A TERTIARY AMINE HAVING ONE LONG STRAIGHT CHAIN ALIPHATIC GROUP AND TWO SHORT CHAIN ALKY GROUPS, OR A MIXTURE OF SUCH AN AMINE WITH A LONG STRAIGHT CHAIN PRIMARY AMINE, WHEN ADDED IN MINOR PROPORTION TO A GASOLINE, WILL IMPROVE THE DISTRIBUTION OF THE AIR-FUEL MIXTURE IN THE INTAKE MANIFOLD OF A MULTICYLINDER GASOLINE ENGINE, RUN WITH THE RESULTING BLEND, THEREBY INCREASING OPERATING EFFICIENCY. ADDITION OF THE MIXED AMINES TO A GASOLINE ALSO IMPROVES FUEL ECONOMY AS EVIDENCE BY BETTER GASOLINE MILEAGE. THE TERTIARY AMINE AIDS THE SOLUBILITY OF THE PRIMARY AMINE IN AN ADDITIVE CONCENTRATE USED FOR BLENDING.
Inventors
- 👤 Abraham A Zimmerman
- 👤 Louis E Furlong
- 👤 Hugh F Shannon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:11
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L1/222; C10L1/2222
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-12-26 | 1976-06-26 | 1976-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-26 | 1980-06-26 | 1980-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-26 | 1984-06-26 | 1984-12-26 | $7700.00 | Window Closed / Lapsed |