US2573579A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel composition
Assignee: Shell Development Co
•
Filing: 1948-11-09
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Granted: 1951-10-30
•
Expires: 1968-11-09
Abstract
No abstract record available.
Inventors
- 👤 Antoine E Lacomble
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:55
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/20; C10L1/201; C10L1/30; C10L1/305; C10L1/306
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
85 words
A FUEL COMPOSITION SUITABLE FOR USE INK INTERNAL COMBUSTION ENGINES, WHICH COMPRISES A HYDROCARBON FRACTION BOILING WITHIN THE GASOLINE RANGE, FROM ABOUT 0.5 TO ABOUT 6 CC. OF TETRAETHYL LEAD PER GALLON OF FUEL COMPOSITION, AND AN APPROXIMATELY STOICHIOMETRIC AMOUNT, BASED ON THE TETRA-EHTYL LEAD, OF A HALOGEN-CARBON COMPOUND CONSISTING ONLY OF CARBON AND HALOGEN ATOMS AND HAVING TWO CARBON ATOMS PER MOLECULE AND AT LEAST TWO HALOGEN ATOMS PER CARBON ATOM, SAID HALOGEN ATOMS HAVING AN ATOMIC WEIGHT OF BETWEEN 35 AND 81, INCLUSIVE.
References Cited (Backward Citations)
US2364921A
Cited
US2501678A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-10-29 | 1955-04-30 | 1955-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-29 | 1959-04-30 | 1959-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-29 | 1963-04-30 | 1963-10-30 | $7700.00 | Window Closed / Lapsed |