US3250599A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuels of improved low temperature pumpability
Assignee: Sinclair Research Inc
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Filing: 1962-12-03
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Granted: 1966-05-10
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Expires: 1982-12-03
Abstract
No abstract record available.
Inventors
- 👤 James H Kirk
- 👤 Seymour H Patinkin
- 👤 William L Steinhoff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:19
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/143; C10L1/16; C10L1/1691; C10L1/18; C10L1/192; C10L1/195; C10L1/197; C10L1/1973
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
A FUEL OIL COMPOSITION HAVING IMPROVED PUMPABILITY OVER A WIDER RANGE OF LOW TEMPERATURES CONSISTING ESSENTIALLY OF A PETROLEUM DISTILLATE FUEL BOILING ABOVE THE GASOLINE RANGE HAVING INCORPORATED THEREIN ABOUT 0.001 TO 0.5 VOLUME PERCENT OF A COPOLYMER OF ABOUT 60 TO 99% BY WEIGHT ETHYLENE AND ABOUT 1 TO 40% BY WEIGHT OF A VINYL FATTY ACID ESTER OF ABOUT 3 TO 5 CARBON ATOMS, SAID COPOLYMER HAVING A MOLECULAR WEIGHT OF ABOUT 1,000 TO 3,000, AND ABOUT 0.05 TO 0.4 VOLUME PERCENT OF A PETROLEUM MICROCRYSTALLINE WAX, SAID AMOUNTS IMPROVING THE LOW TEMPERATURE PUMPABILITY OF THE FUEL.
Claim 2
Dependent Claim
99 words
A FUEL OIL COMPOSITION HAVING IMPROVED PUMPABILITY OVER A WIDER RANGE OF LOW TEMPERATURES CONSISTING ESSENTIALLY OF A PETROLEUM DISTILLATE FUEL BOILING ABOVE THE GASOLINE RANGE HAVING INCORPORATED THEREIN ABOUT 0.001 TO 0.5 VOLUME PERCENT OF A COPOLYMER OF ABOUT 60 TO 99% BY WEIGHT ETHYLENE AND ABOUT 1 TO 40% BY WEIGHT OF A VINYL FATTY ACID ESTER OF ABOUT 3 TO 5 CARBON ATOMS, SAID COPOLYMER HAVING A MOLECULAR WEIGHT OF ABOUT 1,000 TO 3,000, AND ABOUT 0.05 TO 0.4 VOLUME PERCENT OF A PETROLEUM MICROCRYSTALLINE WAX, SAID AMOUNTS IMPROVING THE LOW TEMPERATURE PUMPABILITY OF THE FUEL.
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) | 1969-05-09 | 1969-11-08 | 1970-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-09 | 1973-11-08 | 1974-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-09 | 1977-11-08 | 1978-05-10 | $7700.00 | Window Closed / Lapsed |