US3269808A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermally stable fuels and stabilizing agents therefor
Assignee: Gulf Research and Development Co
•
Filing: 1961-08-07
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Granted: 1966-08-30
•
Expires: 1981-08-07
Abstract
No abstract record available.
Inventors
- 👤 Arthur V Churchill
- 👤 Ek Arvid
- 👤 Elizabeth L Fareri
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:08
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/143; C08; C08F; C08F28/00; C10L1/22; C10L1/228; C10L1/2283; C10L1/24; C10L1/2462; C10L1/2468
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
A FUEL COMPOSITION COMPRISING A MAJOR AMOUNT OF A NORMALLY THERMALLY UNSTABLE, NORMALLY LIQUID HYDROCARBON MIXTURE BOILING IN THE AVIATION TURBINE FUEL RANGE AND A SMALL AMOUNT, SUFFICIENT TO IMPROVE THE THERMAL STABILITY OF SAID FUEL COMPOSITION OF A COMBINATION OF (I) N,N''-DISALICYLIDENE-1,2-PROPYLENEDIAMINE, AND (II) AN OIL-SOLUBLE SULFUR-CONTAINING 1:9 WEIGHT RATIO COPOLYMER OF MONOMERIC BETA-ETHYLMERCAPTOETHYL METHACRYLATE AND LAURYL METHACRYLATE, SAID SMALL AMOUNT CORRESPONDING TO AT LEAST 2.5 POUNDS OF EACH OF SAID N,N''-DISALICYLIDENE1,2-PROPYLENEDIAMINE AND SAID OIL-SOLUBLE SULFUR-CONTAINING COPOLYMER PER THOUSAND BARRELS OF FUEL.
Claim 2
Dependent Claim
83 words
A FUEL COMPOSITION COMPRISING A MAJOR AMOUNT OF A NORMALLY THERMALLY UNSTABLE, NORMALLY LIQUID HYDROCARBON MIXTURE BOILING IN THE AVIATION TURBINE FUEL RANGE AND A SMALL AMOUNT, SUFFICIENT TO IMPROVE THE THERMAL STABILITY OF SAID FUEL COMPOSITION OF A COMBINATION OF (I) N,N''-DISALICYLIDENE-1,2-PROPYLENEDIAMINE, AND (II) AN OIL-SOLUBLE SULFUR-CONTAINING 1:9 WEIGHT RATIO COPOLYMER OF MONOMERIC BETA-ETHYLMERCAPTOETHYL METHACRYLATE AND LAURYL METHACRYLATE, SAID SMALL AMOUNT CORRESPONDING TO AT LEAST 2.5 POUNDS OF EACH OF SAID N,N''-DISALICYLIDENE1,2-PROPYLENEDIAMINE AND SAID OIL-SOLUBLE SULFUR-CONTAINING COPOLYMER PER THOUSAND BARRELS OF FUEL.
References Cited (Backward Citations)
US2800450A
Cited
GB776955A
Cited
US2800453A
Cited
US2925406A
Cited
US2974025A
Cited
US3102863A
Cited
US3034876A
Cited
US3067019A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-29 | 1970-02-28 | 1970-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-29 | 1974-02-28 | 1974-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-29 | 1978-02-28 | 1978-08-30 | $7700.00 | Window Closed / Lapsed |