US2789892A
Expired / Lapsed
US
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Diesel fuel composition
Assignee: California Research LLC
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Filing: 1952-10-22
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Granted: 1957-04-23
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Expires: 1972-10-22
Abstract
No abstract record available.
Inventors
- 👤 Primo L Pinotti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:36
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/18; C10L1/188; C10L1/1886; C10L1/24; C10L1/2431; C10L1/2437
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
AN IMPROVED FUEL COMPRISING A MAJOR PORTION OF HYDROCARBONS BOILING WITHIN THE RANGE OF ABOUT 350*F. TO ABOUT 850*F. AND FROM ABOUT 0.3 TO ABOUT 3.0 MM./KG. OF FUEL OF LEAD IN THE FORM OF A COMBINATION OF AN OILSOLUBLE LEAD SALT OF A MONOALKYL BENZENE SULFONIC ACID HAVING FROM 14 TO 20 CARBON ATOMS IN THE ALKYL PORTION OF SAID SULFONIS ACID SALT AND AN OIL-SOLUBLE LEAD SALT OF A PETROLEUM NAPHTHENIC ACID, WHEREIN THE MOR RATIO OF THE LEAD SALT OF THE SULFONIC ACID TO THE LEAD SALT OF THE NAPHTHENIC ACID LIES IN THE RANGE OF FROM ABOUT 1:16 TO ABOUT 1:4.
Claim 2
Dependent Claim
105 words
AN IMPROVED FUEL COMPRISING A MAJOR PORTION OF HYDROCARBONS BOILING WITHIN THE RANGE OF ABOUT 350*F. TO ABOUT 850*F. AND FROM ABOUT 0.3 TO ABOUT 3.0 MM./KG. OF FUEL OF LEAD IN THE FORM OF A COMBINATION OF AN OILSOLUBLE LEAD SALT OF A MONOALKYL BENZENE SULFONIC ACID HAVING FROM 14 TO 20 CARBON ATOMS IN THE ALKYL PORTION OF SAID SULFONIS ACID SALT AND AN OIL-SOLUBLE LEAD SALT OF A PETROLEUM NAPHTHENIC ACID, WHEREIN THE MOR RATIO OF THE LEAD SALT OF THE SULFONIC ACID TO THE LEAD SALT OF THE NAPHTHENIC ACID LIES IN THE RANGE OF FROM ABOUT 1:16 TO ABOUT 1:4.
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) | 1960-04-22 | 1960-10-22 | 1961-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-04-22 | 1964-10-22 | 1965-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-04-22 | 1968-10-22 | 1969-04-23 | $7700.00 | Window Closed / Lapsed |