Patent US2858200A successfully refreshed from Google Patents.
US2858200A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diesel engine fuel
Assignee: Union Oil Company of California
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Filing: 1954-06-28
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Granted: 1958-10-28
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Expires: 1974-06-28
Abstract
No abstract record available.
Inventors
- 👤 John L Broughten
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:05
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/04; C10L1/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
A DIESEL ENGINE FUEL HAVING AN API GRAVITY BETWEEN ABOUT 25 AND ABOUT 35, A FLASH POINT OF AT LEAST ABOUT 150*F., A SAYBOLT UNIVERSITY VISCOSITY AT 100*F. BETWEEN ABOUT 35 AND ABOUT 45 AND A CETANE NUMBER OF AT LEAST ABOUT 31, SAID FUEL CONSISTING OF BETWEEN ABOUT 40% AND 75% BY VOLUME OF A THERMOFOR CATALYTIC CRACKED TCC CYCLE OIL HAVING AN API GRAVITY OF ABOUT 28, A SAYBOLT UNIVERSAL VISCOSITY AT 100*F. OF ABOUT 30 AND AN ACID SOLUBILITY OF ABOUT 45% AND CORRESPONDINGLY BETWEEN ABOUT 25% AND ABOUT 60% BY VOLUME OF A FLUID CATALYTIC CRACKED CYCLE OIL HAVING AN API GRAVITY OF ABOUT 20, A SAYBOLT UNIVERSAL VISCOSITY AT 100*F. OF ABOUT 50 AND AN ACID SOLUBILITY OF ABOUT 50%, AND THERMOLFOR CATALYTIC CRACKED CYCLE OIL AND SAID FLUID CATALYTIC CRACKED CYCLE OIL BEING DISTILLATE FRACTIONS.
Claim 2
Dependent Claim
23 words
A DIESEL ENGINE FUEL ACCORDING TO CLAIM 2 CONTAINING ALSO BETWEEN ABOUT 0.1% AND ABOUT 0.3% BY VOLUME OF A CETANE IMPROVING AGENT.
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) | 1961-10-27 | 1962-04-28 | 1962-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-27 | 1966-04-28 | 1966-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-27 | 1970-04-28 | 1970-10-28 | $7700.00 | Window Closed / Lapsed |