US2978302A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized distillate fuels
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1958-02-28
•
Granted: 1961-04-04
•
Expires: 1978-02-28
Abstract
No abstract record available.
Inventors
- 👤 Joel R Siegel
- 👤 Jr John V Clarke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:16
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/143; C10L1/18; C10L1/192; C10L1/195; C10L1/196; C10L1/1966; C10L1/20; C10L1/206; C10L1/208; C10L1/22; C10L1/226; C10L1/234; C10L1/236; C10L1/2362; C10L1/2366
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
183 words
A PETROLEUM DISTILLATE FUEL BOILING IN THE RANGE BETWEEN ABOUT 300*F. AND ABOUT 600*F. CONTAINING FROM ABOUT 0.001% TO ABOUT 2% BY WEIGHT OF AN OIL-SOLUBLE POLYMERIC DISPERSANT SELECTED FROM THE GROUP CONSISTING OF (A) A 6000 TO 20,000 MOLECULAR WEIGHT COPOLYMER OF A C8 TO C24 ALKYL ALIPHATIC OXY MIXED ESTER OF AN UNSATURATED CONJUGATED C4 TO C5 DIBASIC ACID AND A VINYL ESTER OF A SHORT CHAIN FATTY ACID WHEREIN SAID ALIPHATIC GROUPS ARE SELECTED FROM THE CLASS CONSISTING OF A C2 TO C3 ALKYLENE AND A C2 TO C3 HALOGENATED ALKYLENE, AND (B) A COPOLYMER OF FROM 20 TO 99% BY WEIGHT OF A C3 TO C18 ALIPHATIC ALCOHOL ESTER OF AN ACID SELECTED FROM THE GROUP CONSISTING OF ACRYLIC ACID AND AN ALPHA SUBSTITUTED ACRYLIC ACID IN WHICH THE ALPHA SUBSTITUENT IS A LOWER ALKYL GROUP, FROM 0.5 TO 50% BY WEIGHT OF A BASIC TERTIARY AMINO ALKYL ACRYLATE, AND FROM 0 TO 79% BY WEIGHT OF A COPOLYMERIZABLE OLEFINICALLY UNSATURATED ORGANIC MONOMER AND FROM ABOUT 0.001% TO ABOUT 2% BY WEIGHT OF A HYDRAZINE DERIVATIVE HAVING THE FORMULA
Claim 2
Dependent Claim
183 words
A PETROLEUM DISTILLATE FUEL BOILING IN THE RANGE BETWEEN ABOUT 300*F. AND ABOUT 600*F. CONTAINING FROM ABOUT 0.001% TO ABOUT 2% BY WEIGHT OF AN OIL-SOLUBLE POLYMERIC DISPERSANT SELECTED FROM THE GROUP CONSISTING OF (A) A 6000 TO 20,000 MOLECULAR WEIGHT COPOLYMER OF A C8 TO C24 ALKYL ALIPHATIC OXY MIXED ESTER OF AN UNSATURATED CONJUGATED C4 TO C5 DIBASIC ACID AND A VINYL ESTER OF A SHORT CHAIN FATTY ACID WHEREIN SAID ALIPHATIC GROUPS ARE SELECTED FROM THE CLASS CONSISTING OF A C2 TO C3 ALKYLENE AND A C2 TO C3 HALOGENATED ALKYLENE, AND (B) A COPOLYMER OF FROM 20 TO 99% BY WEIGHT OF A C3 TO C18 ALIPHATIC ALCOHOL ESTER OF AN ACID SELECTED FROM THE GROUP CONSISTING OF ACRYLIC ACID AND AN ALPHA SUBSTITUTED ACRYLIC ACID IN WHICH THE ALPHA SUBSTITUENT IS A LOWER ALKYL GROUP, FROM 0.5 TO 50% BY WEIGHT OF A BASIC TERTIARY AMINO ALKYL ACRYLATE, AND FROM 0 TO 79% BY WEIGHT OF A COPOLYMERIZABLE OLEFINICALLY UNSATURATED ORGANIC MONOMER AND FROM ABOUT 0.001% TO ABOUT 2% BY WEIGHT OF A HYDRAZINE DERIVATIVE HAVING THE FORMULA
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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) | 1964-04-03 | 1964-10-03 | 1965-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-03 | 1968-10-03 | 1969-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-03 | 1972-10-03 | 1973-04-04 | $7700.00 | Window Closed / Lapsed |