US2935975A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrocarbon fuels having improved antiknock properties
Assignee: EIDP Inc
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Filing: 1957-06-27
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Granted: 1960-05-10
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Expires: 1977-06-27
Abstract
No abstract record available.
Inventors
- 👤 Charles A Sandy
- 👤 James H Werntz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:05
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/18; C10L1/188; C10L1/1881
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
90 words
A METHOD OF OPERATING AN INTERNAL COMBUSTION ENGINE WHICH COMPRISES INTRODUCING A HYDROCARBON FUEL OF THE GASOLINE BOILING RANGE INTO THE COMBUSTION CHAMBER OF THE CYLINDER AND SIMULTANEOUSLY THEREWITH INTRODUCING INTO SAID COMBUSTION CHAMBER SO THAT IT IS PRESENT AT THE TIME THE FUEL IS IGNITED A LITHIUM SALT OF AN ACYCLIC HYDROCARBON BRANCHED CARBOXYLIC ACID, THE CARBOXY GROUP OF SAID ACID BEING ATTACHED TO A METHYLENE GROUP IN AN ALIPHATIC RADICAL, IN AN AMOUNT SUFFICIENT TO GIVE FROM 0.005 GRAM TO 2.0 GRAMS OF LITHIUM PER GALLON OF FUEL.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-10 | 1963-11-09 | 1964-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-10 | 1967-11-09 | 1968-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-10 | 1971-11-09 | 1972-05-10 | $7700.00 | Window Closed / Lapsed |