US3069245A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synergistic mixture of pour depressants for middle distillates
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1960-10-18
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Granted: 1962-12-18
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Expires: 1980-10-18
Abstract
No abstract record available.
Inventors
- 👤 Stephen L Wythe
- 👤 Jr William C Hollyday
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:43
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/146; C10L1/16; C10L1/1625; C10L1/1633; C10L1/165; C10L1/18; C10L1/192; C10L1/195; C10L1/1955; C10L1/197; C10L1/1973
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
A PETROLEUM DISTILLATE FUEL COMPOSITION HAVING AN IMPROVED POUR WHICH COMPRISSES ESSENTIALLY A PETROLEUM DISTILLATE FUEL BOILING IN THE RANGE FROM ABOUT 250*F. AND ABOUT 750*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 .001% TO .05% BY WEIGHT OF A BLEND CONSISTING ESSENTIALLY OF ABOUT 10% TO 90% BY WEIGHT OF AN ACYLATED POLYSTYRENE HAVING A STRUCTURAL FORMULA AS FOLLOWS:
Claim 2
Dependent Claim
77 words
A PETROLEUM DISTILLATE FUEL COMPOSITION HAVING AN IMPROVED POUR WHICH COMPRISSES ESSENTIALLY A PETROLEUM DISTILLATE FUEL BOILING IN THE RANGE FROM ABOUT 250*F. AND ABOUT 750*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 .001% TO .05% BY WEIGHT OF A BLEND CONSISTING ESSENTIALLY OF ABOUT 10% TO 90% BY WEIGHT OF AN ACYLATED POLYSTYRENE HAVING A STRUCTURAL FORMULA AS FOLLOWS:
References Cited (Backward Citations)
US2499723A
Cited
US2703817A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-12-17 | 1966-06-18 | 1966-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-17 | 1970-06-18 | 1970-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-17 | 1974-06-18 | 1974-12-18 | $7700.00 | Window Closed / Lapsed |