Patent US3236612A successfully refreshed from Google Patents.
US3236612A
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Middle distillate composition of improved pour characteristics
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1961-10-10
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Granted: 1966-02-22
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Expires: 1981-10-10
Abstract
No abstract record available.
Inventors
- 👤 Ilnyckyj Stephan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:49
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/18; C10L1/192; C10L1/195; C10L1/1955; C10L1/197; C10L1/1973
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
A PETROLEUM DISTILLATE COMPOSITION HAVING AN IMPROVED POUR WHICH COMPROSES A DISTILLATE FUEL BOILING IN THE RANGE BETWEEN ABOUT 250*F. AND ABOUT 800*F. WHICH HAS BEEN IMPROVED WITH RESPECT TO POUR POINT BY THE INCORPORATION THEREIN OF A POUR DEPRESSING EFFECTIVE AMOUNT IN THE RANGE FROM ABOUT .01 TO .5% BY WEIGHT OF AN OIL SOLUBLE COPOLYMER OF ETHYLENE AND A VINYL FATTY ACID ESTER HAVING FROM ABOUT 7 TO ABOUT 14 CARBON ATOMS IN THE ESTER, SAID COPOLYMER HAVING A MOLECULAR WEIGHT IN THE RANGE FROM ABOUT 1000 TO 3500, SAID COPOLYMER BEING FURTHER CHARACTERIZED BY CONTAINING FROM ABOUT 30% TO ABOUT 50% BY WEIGHT OF SAID VINYL FATTY ACID ESTER.
Claim 2
Dependent Claim
112 words
A PETROLEUM DISTILLATE COMPOSITION HAVING AN IMPROVED POUR WHICH COMPROSES A DISTILLATE FUEL BOILING IN THE RANGE BETWEEN ABOUT 250*F. AND ABOUT 800*F. WHICH HAS BEEN IMPROVED WITH RESPECT TO POUR POINT BY THE INCORPORATION THEREIN OF A POUR DEPRESSING EFFECTIVE AMOUNT IN THE RANGE FROM ABOUT .01 TO .5% BY WEIGHT OF AN OIL SOLUBLE COPOLYMER OF ETHYLENE AND A VINYL FATTY ACID ESTER HAVING FROM ABOUT 7 TO ABOUT 14 CARBON ATOMS IN THE ESTER, SAID COPOLYMER HAVING A MOLECULAR WEIGHT IN THE RANGE FROM ABOUT 1000 TO 3500, SAID COPOLYMER BEING FURTHER CHARACTERIZED BY CONTAINING FROM ABOUT 30% TO ABOUT 50% BY WEIGHT OF SAID VINYL FATTY ACID ESTER.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-21 | 1969-08-23 | 1970-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-21 | 1973-08-23 | 1974-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-21 | 1977-08-23 | 1978-02-22 | $7700.00 | Window Closed / Lapsed |