US2797153A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel for spark ignition internal combustion engines
Assignee: Sinclair Refining Co
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Filing: 1955-05-31
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Granted: 1957-06-25
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Expires: 1975-05-31
Abstract
No abstract record available.
Inventors
- 👤 Euphime V Bereslavsky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:31
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
A FUEL HIGHER COMPRESSION INTERNAL COMBUSTION ENGINES EMPLOYING SPARK IGNITION WHICH COMPRISES HIGH OCTANE GASOLINE AS A PREDOMINANT COMPONENT TOGETHER WITH TETRAETHYL LEAD AND FROM .005% BY VOLUME OF AT LEAST ONE TRIALKYL PHOSPHINE SELECTED FROM THE CLASS OF SUCH PHOSPHINES IN WHICH THE ALKYL GROUPS ARE SELECTED FROM THE GROUP CONSISTING OF C1 TO C3 ALKYL GROUPS, PRIMARY AND SECONDARY C4 ALKYL GROUPSS AND PRIMARY C5 ALKYL GROUPS.
Claim 2
Dependent Claim
69 words
A FUEL HIGHER COMPRESSION INTERNAL COMBUSTION ENGINES EMPLOYING SPARK IGNITION WHICH COMPRISES HIGH OCTANE GASOLINE AS A PREDOMINANT COMPONENT TOGETHER WITH TETRAETHYL LEAD AND FROM .005% BY VOLUME OF AT LEAST ONE TRIALKYL PHOSPHINE SELECTED FROM THE CLASS OF SUCH PHOSPHINES IN WHICH THE ALKYL GROUPS ARE SELECTED FROM THE GROUP CONSISTING OF C1 TO C3 ALKYL GROUPS, PRIMARY AND SECONDARY C4 ALKYL GROUPSS AND PRIMARY C5 ALKYL GROUPS.
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) | 1960-06-24 | 1960-12-24 | 1961-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-24 | 1964-12-24 | 1965-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-24 | 1968-12-24 | 1969-06-25 | $7700.00 | Window Closed / Lapsed |