Patent US2930681A successfully refreshed from Google Patents.
US2930681A
Expired / Lapsed
US
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Fuels for compression-ignition engines
Assignee: California Research LLC
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Filing: 1957-09-30
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Granted: 1960-03-29
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Expires: 1977-09-30
Abstract
No abstract record available.
Inventors
- 👤 Maurice R Barusch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:37
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/143; C10L1/18; C10L1/192; C10L1/198; C10L1/1985; C10L1/24; C10L1/2431; C10L1/2437
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
152 words
A FUEL COMPOSITION FOR USE IN THE COMPRESSIONIGNITION ENGINE, UNDER THE CONDITIONS TENDING TO INDUCE RUSTING OF THE ENGINE AT INTERNAL OPERATING TEMPERATURES OWING TO THE PRESENCE OF WATER CONTAMINATION IN THE FUEL AND TO FREQUENT INTERRUPTIONS OF THE ENGINE OPERATION, SAID FUEL COMPOSITION CONSISTING ESSENTIALLY OF A HYDROCARBON BASE FUEL BOILING FROM ABOUT 325 TO ABOUT 750*F. AND AS A RUST-INHIBITING ADDITIVE COMBINATION, FROM 2.5 TO 10 P.P.M. OF AN AMMONIUM SALT OF AN ALKYL ARYL SULFONIC ACID SELECTED FROM THE GROUP CONSISTING OF ALKYL BENZENE SULFONIC AND ALKYL NAPHTHALENE SULFONIC ACIDS HAVING A MOLECULAR WEIGHT IN THE RANGE OF FROM ABOUT 400 TO 600, AND 200 TO 400 P.P.M. OF AN OIL-SOLUBLE POLYOXYALKYLENE ETHER OF A PREDOMINANTLY MONOALKYL PHENOL, SAID ETHER HAVING FROM 9 TO 18 ALKYL CARBON ATOMS IN ITS ALKYL PORTION AND FROM 4 TO 7 OXYALKYLENE UNITS OF 2 TO 4 CARBON ATOMS IN ITS POLYOXYALKYLENE PORTION.
Claim 2
Dependent Claim
152 words
A FUEL COMPOSITION FOR USE IN THE COMPRESSIONIGNITION ENGINE, UNDER THE CONDITIONS TENDING TO INDUCE RUSTING OF THE ENGINE AT INTERNAL OPERATING TEMPERATURES OWING TO THE PRESENCE OF WATER CONTAMINATION IN THE FUEL AND TO FREQUENT INTERRUPTIONS OF THE ENGINE OPERATION, SAID FUEL COMPOSITION CONSISTING ESSENTIALLY OF A HYDROCARBON BASE FUEL BOILING FROM ABOUT 325 TO ABOUT 750*F. AND AS A RUST-INHIBITING ADDITIVE COMBINATION, FROM 2.5 TO 10 P.P.M. OF AN AMMONIUM SALT OF AN ALKYL ARYL SULFONIC ACID SELECTED FROM THE GROUP CONSISTING OF ALKYL BENZENE SULFONIC AND ALKYL NAPHTHALENE SULFONIC ACIDS HAVING A MOLECULAR WEIGHT IN THE RANGE OF FROM ABOUT 400 TO 600, AND 200 TO 400 P.P.M. OF AN OIL-SOLUBLE POLYOXYALKYLENE ETHER OF A PREDOMINANTLY MONOALKYL PHENOL, SAID ETHER HAVING FROM 9 TO 18 ALKYL CARBON ATOMS IN ITS ALKYL PORTION AND FROM 4 TO 7 OXYALKYLENE UNITS OF 2 TO 4 CARBON ATOMS IN ITS POLYOXYALKYLENE PORTION.
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) | 1963-03-29 | 1963-09-28 | 1964-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-29 | 1967-09-28 | 1968-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-29 | 1971-09-28 | 1972-03-29 | $7700.00 | Window Closed / Lapsed |