US2691572A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High sulfur diesel fuel containing organic lead salts
Assignee: California Research LLC
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Filing: 1949-12-28
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Granted: 1954-10-12
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Expires: 1969-12-28
Abstract
No abstract record available.
Inventors
- 👤 Primo L Pinotti
- 👤 Maurice R Barusch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:20
CPC Classifications
C; C10; C10L; C10L10/00; C10L10/08; C10L1/00; C10L1/10; C10L1/14; C10L1/24; C10L10/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
A HIGH-SULFUR DIESEL FUEL OF IMPROVED WEAR CHARACTERISTICS COMPRISING A DIESEL FUEL OIL BOILING WITHIN THE RANGE OF ABOUT 350* F. TO ABOUT 750* F. HAVING AN API GRAVITY ABOVE ABOUT 20* AND CHARACTERIZED BY THE PRESENCE OF AT LEAST 0.5% BY WEIGHT OF SULFUR CONTAINED THEREIN IN THE FORM OF STABLY BOUND NATURALLY OCCURRING SULFUR COMPOUNDS AND BETWEEN ABOUT 0.005 AND 0.07 WEIGHT PER CENT OF LEAD IN THE FORM OF OIL-SOLUBLE LEAD COMPOUNDS SELECTED FROM THE GROUP CONSISTING OF NAPHTHENATES, SULFONATES, AND HIGH MOLECULAR WEIGHT SALTS OF FATTY ACIDS HAVING ABOUT 14 TO ABOUT 18 CARBON ATOMS PER MOLECULE.
Claim 2
Dependent Claim
101 words
A HIGH-SULFUR DIESEL FUEL OF IMPROVED WEAR CHARACTERISTICS COMPRISING A DIESEL FUEL OIL BOILING WITHIN THE RANGE OF ABOUT 350* F. TO ABOUT 750* F. HAVING AN API GRAVITY ABOVE ABOUT 20* AND CHARACTERIZED BY THE PRESENCE OF AT LEAST 0.5% BY WEIGHT OF SULFUR CONTAINED THEREIN IN THE FORM OF STABLY BOUND NATURALLY OCCURRING SULFUR COMPOUNDS AND BETWEEN ABOUT 0.005 AND 0.07 WEIGHT PER CENT OF LEAD IN THE FORM OF OIL-SOLUBLE LEAD COMPOUNDS SELECTED FROM THE GROUP CONSISTING OF NAPHTHENATES, SULFONATES, AND HIGH MOLECULAR WEIGHT SALTS OF FATTY ACIDS HAVING ABOUT 14 TO ABOUT 18 CARBON ATOMS PER MOLECULE.
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) | 1957-10-11 | 1958-04-12 | 1958-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-10-11 | 1962-04-12 | 1962-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-10-11 | 1966-04-12 | 1966-10-12 | $7700.00 | Window Closed / Lapsed |