US3637358A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilization of hydrocarbon oils
Assignee: Universal Oil Products Co
•
Filing: 1969-03-05
•
Granted: 1972-01-25
•
Expires: 1989-03-05
Abstract
Abstract Stabilizing hydrocarbon oil with an N-substituted alkoxyalkylamine. The invention is particularly advantageous to prevent sediment formation in fuel oil.
Inventors
- 👤 Henryk A Cyba
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:17
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L1/222; C10L1/2222; C10L1/2225
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
8 words
The oil of claim 1 being fuel oil.
Claim 2
Dependent Claim
29 words
The oil of claim 2 in which the said alkoxyalkylamine is in an amount of from about 0.001 percent to about 0.01 percent by weight of the fuel oil.
Claim 3
Dependent Claim
11 words
The oil of claim 1 in which said alkoxyalkylamine is N-sec-alkyl-3-alkoxypropylamine.
Claim 4
Dependent Claim
7 words
The compound of claim 4 being N-sec-butyl-3-ethoxypropylamine.
Claim 5
Dependent Claim
11 words
The oil of claim 1 in which said alkoxyalkylamine is N,N-dicycloalkyl-3-alkoxypropylamine.
Claim 6
Dependent Claim
10 words
The oil of claim 6 in which alkoxyalkylamine is N,N-dicyclohexyl-3-methoxypropylamine.
Claim 7
Dependent Claim
11 words
The oil of claim 1 in which said alkoxyalkylamine is N-sec-alkyl-2-alkoxyisopropylamine.
Claim 8
Dependent Claim
11 words
The oil of claim 8 in which said alkoxyalkylamine is N-sec-butyl-2-methoxyisopropylamine.
Claim 9
Dependent Claim
11 words
The oil of claim 1 in which said alkoxyalkylamine is N-di-sec-alkyl-2-ethoxyethylamine.
Claim 10
Dependent Claim
11 words
The oil of claim 10 in which said alkoxyalkylamine is N,N-di-isopropyl-2-ethoxyethylamine.
Claim 11
Dependent Claim
11 words
The oil of claim 1 in which said alkoxyalkylamine is N,N-di-cyclohexyl-2-ethoxyethylamine.
Claim 12
Dependent Claim
11 words
The oil of claim 1 in which said alkoxyalkylamine is N-sec-alkyl-2-hydroxyalkoxyethylamine.
Claim 13
Dependent Claim
11 words
The oil of claim 13 in which said alkoxyalkylamine is N-sec-octyl-2-hydroxyethoxyethylamine.
Claim 14
Dependent Claim
12 words
The oil of claim 1 in which R'' is sec-alkyl or cycloalkyl.
Claim 15
Dependent Claim
10 words
The oil of claim 1 in which R is cycloalkyl.
References Cited (Backward Citations)
US3254974A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-24 | 1975-07-26 | 1976-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-24 | 1979-07-26 | 1980-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-24 | 1983-07-26 | 1984-01-25 | $7700.00 | Window Closed / Lapsed |