US4518395A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the stabilization of metal-containing hydrocarbon fuel compositions
Assignee: KAY-FRIES Inc
•
Filing: 1982-09-21
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Granted: 1985-05-21
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Expires: 2002-09-21
Abstract
Abstract A hydrocarbon fuel composition containing from 5 ppm to 500 ppm of a metal that normally catalyzes oxidative deterioration of said fuel composition is stabilized by incorporating in it from 1% to 25% by volume of a stabilizer that is an alkanol having 1 to 10 carbon atoms, a glycol having 2 to 9 carbon atoms, or a mixture thereof.
Inventors
- 👤 Joseph Petronella
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:12
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/02; C10L1/026; C10L1/10; C10L1/12; C10L1/1216; C10L1/14; C10L1/18; C10L1/182; C10L1/1822; C10L1/1824
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
58 words
A diesel fuel composition stabilized against oxidative deterioration that consists essentially of diesel fuel containing from 5 ppm to 500 ppm of copper and from 1% to 25% by volume of a stabilizer selected from the group consisting of alkanols having from 1 to 10 carbon atoms, glycols having from 2 to 9 carbon atoms, and mixtures thereof.
Claim 2
Dependent Claim
58 words
A diesel fuel composition stabilized against oxidative deterioration that consists essentially of diesel fuel containing from 5 ppm to 500 ppm of copper and from 1% to 25% by volume of a stabilizer selected from the group consisting of alkanols having from 1 to 10 carbon atoms, glycols having from 2 to 9 carbon atoms, and mixtures thereof.
Claim 3
Dependent Claim
30 words
A stabilized diesel fuel composition as defined in claim 1 that contains from 30 ppm to 100 ppm of copper and from 2% to 10% by volume of said stabilizer.
Claim 4
Dependent Claim
22 words
A stabilized diesel fuel composition as defined in claim 1 wherein the stabilizer is an alkanol having 1 to 4 carbon atoms.
Claim 5
Dependent Claim
15 words
A stabilized diesel fuel composition as defined in claim 1 wherein the stabilizer is ethanol.
Claim 6
Dependent Claim
78 words
A process for stabilizing diesel fuel against oxidative deterioration that consists of incorporating a stabilizer into a fuel composition consisting essentially of diesel fuel and from 5 ppm to 500 ppm of copper, said stabilizer selected from the group consisting of alkanols having from 1 to 10 carbon atoms, glycols having from 2 to 9 carbon atoms and mixtures thereof and being incorporated in amounts from 1% to 25% by volume based on the volume of said composition.
Claim 7
Dependent Claim
78 words
A process for stabilizing diesel fuel against oxidative deterioration that consists of incorporating a stabilizer into a fuel composition consisting essentially of diesel fuel and from 5 ppm to 500 ppm of copper, said stabilizer selected from the group consisting of alkanols having from 1 to 10 carbon atoms, glycols having from 2 to 9 carbon atoms and mixtures thereof and being incorporated in amounts from 1% to 25% by volume based on the volume of said composition.
Claim 8
Dependent Claim
31 words
The process of claim 5 wherein from 2% to 10% by volume of said stabilizer is incorporated in a fuel composition that contains from 30 ppm to 100 ppm of copper.
Claim 9
Dependent Claim
17 words
The process of claim 5 wherein the stabilizer is an alkanol having 1 to 4 carbon atoms.
Claim 10
Dependent Claim
10 words
The process of claim 5 wherein the stabilizer is ethanol.
Claim 11
Dependent Claim
10 words
The process of claim 5 wherein the stabilizer is methanol.
Claim 12
Dependent Claim
17 words
The process of claim 5 wherein the stabilizer is a glycol having 4 to 8 carbon atoms.
References Cited (Backward Citations)
US2445778A
Cited
US3030195A
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US3355270A
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NL7413839A
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US4397654A
Cited
US4378973A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-05-20 | 1988-11-19 | 1989-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-05-20 | 1992-11-19 | 1993-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-05-20 | 1996-11-19 | 1997-05-21 | $7700.00 | Window Closed / Lapsed |