US2575003A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel oil composition
Assignee: Shell Development Co
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Filing: 1948-07-03
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Granted: 1951-11-13
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Expires: 1968-07-03
Abstract
No abstract record available.
Inventors
- 👤 John B R Caron
- 👤 Everett B Glendenning
- 👤 Wies Calmy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:21
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/16; C10L1/1616; C10L1/18; C10L1/188; C10L1/1886; C10L1/24; C10L1/2431; C10L1/2437
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
64 words
AN ANTI-CLOGGING CONCENTRATE ADAPTED TO BE ADDED TO A HYDROCARBON DISTILLATE FUEL NORMALLY SUSCEPTIBLE TOWARD CLOGGING SAID CONCENTRATE COMPRISING FROM ABOUT 10% TO ABOUT 20% OF A POLYVALENT METAL NAPHTHENATE AND ALUMINUM CONSISTING OF IRON NAPTHENATE AND ALUMINUM NAPTHENATE; FROM ABOUT 5% TO ABOUT 15% OF A METAL SALT OF AN ORGANIC SULFONIC ACID AND THE BALANCE OF THE COMPOSITION BEING A FUEL OIL.
References Cited (Backward Citations)
US2369490A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-11-12 | 1955-05-14 | 1955-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-12 | 1959-05-14 | 1959-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-12 | 1963-05-14 | 1963-11-13 | $7700.00 | Window Closed / Lapsed |