Patent US2684292A successfully refreshed from Google Patents.
US2684292A
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Fuel oil composition
Assignee: Shell Development Co
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Filing: 1951-03-13
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Granted: 1954-07-20
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Expires: 1971-03-13
Abstract
No abstract record available.
Inventors
- 👤 John B R Caron
- 👤 Wies Calmy
- 👤 Everett B Glendenning
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:10
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L1/222; C10L1/2222; C10L1/224
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
78 words
A FINISHED NON-ASH DISTILATE FUEL OIL CONTAINING A SUBSTANTIAL AMOUNT OF CRACKED COMPONENTS AND ENTRAINED MOISTURE TO WHICH NONCLOGGING PROPERTIES HAVE BEEN IMPARTED BY THE INCORPORATION OF ABOUT 1 PINT OF A CONCENTRATE CONSISTING OF A HYDROCARBON OIL CONTAINING FROM ABOUT 4% TO ABOUT 20% BY WEIGHT OF AN OILSOLUBLE ALIPHATIC AMINE HAVING AT LEAST ONE ALKYL CHAIN OF AT LEAST 14 CARBON ATOMS AND UP TO 18 CARBON ATOMS, TO 200 TO 1000 GALLONS OF FUEL OIL.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-07-19 | 1958-01-18 | 1958-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-07-19 | 1962-01-18 | 1962-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-07-19 | 1966-01-18 | 1966-07-20 | $7700.00 | Window Closed / Lapsed |