US4339245A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motor fuel
Assignee: Phillips Petroleum Co
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Filing: 1980-10-24
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Granted: 1982-07-13
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Expires: 2000-10-24
Abstract
Abstract Liquid hydrocarbon fuel compositions are provided containing antiknock quantities of ashless antiknock agents comprising selected furyl compounds including furfuryl alcohol, furfuryl amine, furfuryl esters, and alkyl furoates.
Inventors
- 👤 Lyle D. Burns
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:00
CPC Classifications
C; C10; C10L; C10L10/00; C10L10/10; C10L1/00; C10L1/10; C10L1/14; C10L1/18; C10L1/19; C10L1/22; C10L1/222; C10L1/2222
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
28 words
A gasoline composition containing an antiknock quantity of at least one antiknock compound selected from the group consisting of furfuryl acetate, ethyl furfurylacrylate, methyl furoate, and ethyl furoate.
Claim 2
Dependent Claim
28 words
A gasoline composition containing an antiknock quantity of at least one antiknock compound selected from the group consisting of furfuryl acetate, ethyl furfurylacrylate, methyl furoate, and ethyl furoate.
Claim 3
Dependent Claim
23 words
The composition of claim 1 which is unleaded gasoline containing from about 0.5 to about 10 percent by weight of the antiknock compound.
Claim 4
Dependent Claim
19 words
The composition of claim 1 containing from about 1 to about 5 percent by weight of the antiknock compound.
Claim 5
Independent Claim
48 words
A method for improving the antiknock properties of a gasoline composition which comprises incorporating therein a small, but effective amount, sufficient to impart reduced knocking tendencies to said gasoline of an ashless additive selected from the group consisting of furfuryl acetate, ethyl furfurylacrylate, methyl furoate, and ethyl furoate.
Claim 6
Independent Claim
48 words
A method for improving the antiknock properties of a gasoline composition which comprises incorporating therein a small, but effective amount, sufficient to impart reduced knocking tendencies to said gasoline of an ashless additive selected from the group consisting of furfuryl acetate, ethyl furfurylacrylate, methyl furoate, and ethyl furoate.
Claim 7
Dependent Claim
25 words
A method according to claim 4 wherein the gasoline composition is unleaded and contains from about 0.5 to about 10 weight percent of the additive.
Claim 8
Dependent Claim
25 words
A method according to claim 4 wherein the gasoline composition is unleaded and contains from about 1 to about 5 weight percent of the additive.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-07-12 | 1986-01-11 | 1986-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-07-12 | 1990-01-11 | 1990-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-07-12 | 1994-01-11 | 1994-07-13 | $7700.00 | Window Closed / Lapsed |