US2948600A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antiknock compositions
Assignee: Ethyl Corp
•
Filing: 1956-10-24
•
Granted: 1960-08-09
•
Expires: 1976-10-24
Abstract
No abstract record available.
Inventors
- 👤 Melvin L Larson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:44
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/20; C10L1/26; C10L1/2633; C10L1/30; C10L1/305; C10L1/306
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
A HYDROCARBON FUEL OF THE GASOLINE BOILING RANGE ADAPTED FOR USE IN SPARK IGNITION INTERNAL COMBUSTION ENGINES CONTAINING AN ANTIKNOCK QUANTITY OF AN ALKYLLEAD ANTIKNOCK COMPOUND, SAID QUANTITY BEING FROM ABOUT 0.02 TO ABOUT 6.5 GRAMS OF LEAD PER GALLON OF SAID FUEL AND, IN AMOUNT SUFFICIENT TO REDUCE SURFACE IGNITION A PHOSPHORAMIDATE HAVING THE GENERAL FORMULA
Claim 2
Dependent Claim
57 words
A HYDROCARBON FUEL OF THE GASOLINE BOILING RANGE ADAPTED FOR USE IN SPARK IGNITION INTERNAL COMBUSTION ENGINES CONTAINING AN ANTIKNOCK QUANTITY OF AN ALKYLLEAD ANTIKNOCK COMPOUND, SAID QUANTITY BEING FROM ABOUT 0.02 TO ABOUT 6.5 GRAMS OF LEAD PER GALLON OF SAID FUEL AND, IN AMOUNT SUFFICIENT TO REDUCE SURFACE IGNITION A PHOSPHORAMIDATE HAVING THE GENERAL FORMULA
References Cited (Backward Citations)
US2405560A
Cited
GB683405A
Cited
GB709471A
Cited
GB708006A
Cited
FR1094828A
Cited
US2828195A
Cited
US2765220A
Cited
US2794717A
Cited
FR1100185A
Cited
US2863743A
Cited
US2797153A
Cited
US2878255A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-09 | 1964-02-08 | 1964-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-09 | 1968-02-08 | 1968-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-09 | 1972-02-08 | 1972-08-09 | $7700.00 | Window Closed / Lapsed |