Patent DE2529079C2 successfully refreshed from Google Patents.
US2875145A
Expired / Lapsed
US
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Motor fuel
Assignee: Pure Oil Co
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Filing: 1956-08-24
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Granted: 1959-02-24
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Expires: 1976-08-24
Abstract
No abstract record available.
Inventors
- 👤 Weldon G Annable
- 👤 William L Jacobs
- 👤 Robert M Haines
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:39
CPC Classifications
C; C10; C10G; C10G67/00; C10G67/02; C10G67/04; C10G67/0409; C10G67/0418; C10L; C10L1/00; C10L1/04; C10L1/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
A GASOLINE MOTOR FUEL COMPOSITION COMPRISING A PORTION OF AN OLEFINIC GASOLINE HAVING INDUCTION SYSTEM DEPOSIT-FORMING TENDENCIES AND AN AMOUNT SUFFICIENT TO MITIGATE THE ACCUMULATION OF INDUCTION SYSTEM DEPOSITS OF A HYDROGEN-TREATED SOLVENT EXTRACT, SAID HYDROGENTREATED SOLVENT EXTRACT BEING PREPARED BY CONTACTING A SOLVENT EXTRACT FRACTION, OBTAINED FROM THE SOLVENT REFINING OF A LUBRICATING OIL STOCK WITH A SELECTIVE SOLVENT TO PRODUCE A LUBRICATING OIL STOCK WITH A SELECTIVE SOLVENT TO INDEX AND IMPROVE RESISTANCE TO OXIDATION, WITH HYDROGEN AT A TEMPERATURE OF ABOUT 600*-950*F., A PRESSURE OF ABOUT 100-500 P. S. I., A HYDROGEN RATE OF ABOUT 3005000 S. C. F. HYDROGEN/BARREL OF FEED, AND A LIQUID HOURLY VOLUME SPACE VELOCITY OF ABOUT 0.5-10.0 IN THE PRESENCE OF A HYDROGENATION CATALYST.
Claim 2
Dependent Claim
122 words
A GASOLINE MOTOR FUEL COMPOSITION COMPRISING A PORTION OF AN OLEFINIC GASOLINE HAVING INDUCTION SYSTEM DEPOSIT-FORMING TENDENCIES AND AN AMOUNT SUFFICIENT TO MITIGATE THE ACCUMULATION OF INDUCTION SYSTEM DEPOSITS OF A HYDROGEN-TREATED SOLVENT EXTRACT, SAID HYDROGENTREATED SOLVENT EXTRACT BEING PREPARED BY CONTACTING A SOLVENT EXTRACT FRACTION, OBTAINED FROM THE SOLVENT REFINING OF A LUBRICATING OIL STOCK WITH A SELECTIVE SOLVENT TO PRODUCE A LUBRICATING OIL STOCK WITH A SELECTIVE SOLVENT TO INDEX AND IMPROVE RESISTANCE TO OXIDATION, WITH HYDROGEN AT A TEMPERATURE OF ABOUT 600*-950*F., A PRESSURE OF ABOUT 100-500 P. S. I., A HYDROGEN RATE OF ABOUT 3005000 S. C. F. HYDROGEN/BARREL OF FEED, AND A LIQUID HOURLY VOLUME SPACE VELOCITY OF ABOUT 0.5-10.0 IN THE PRESENCE OF A HYDROGENATION CATALYST.
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) | 1962-02-23 | 1962-08-25 | 1963-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-23 | 1966-08-25 | 1967-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-23 | 1970-08-25 | 1971-02-24 | $7700.00 | Window Closed / Lapsed |