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Patent US4378231A successfully refreshed from Google Patents.
US4378231A
Expired / Lapsed
US
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Motor fuel
Assignee: Phillips Petroleum Co
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Filing: 1980-10-24
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Granted: 1983-03-29
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Expires: 2000-10-24
Abstract
Abstract Liquid hydrocarbon fuel compositions are provided containing antiknock quantities of ashless antiknock additives selected from 2-(dimethylaminomethyl) phenols substituted in the 4-position with fluoride and methoxy groups. Novel compositions of matter are provided comprising substituted dimethylaminomethyl phenols.
Inventors
- 👤 Lyle D. Burns
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:42
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L1/222; C10L1/223; C10L1/2235
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
37 words
An internal combustion fuel composition comprising a major proportion of a motor fuel containing a small but effective amount, sufficient to impart reduced knocking tendencies to said motor fuel, of an ashless antiknock additive which is 2-dimethylaminomethyl-4-fluorophenol.
Claim 2
Dependent Claim
37 words
An internal combustion fuel composition comprising a major proportion of a motor fuel containing a small but effective amount, sufficient to impart reduced knocking tendencies to said motor fuel, of an ashless antiknock additive which is 2-dimethylaminomethyl-4-fluorophenol.
Claim 3
Dependent Claim
22 words
A composition according to claim 1 wherein the motor fuel contains from about 0.1 to about 10 weight percent of said additive.
Claim 4
Dependent Claim
27 words
A composition according to claim 1 wherein the motor fuel is a distillate boiling in the range of about 70° F. to about 420° F. (21.1°-216° C.).
Claim 5
Dependent Claim
9 words
A gasoline composition containing an antiknock quantity of 2-dimethylaminomethyl-4-fluorophenol.
Claim 6
Dependent Claim
9 words
A gasoline composition containing an antiknock quantity of 2-dimethylaminomethyl-4-fluorophenol.
Claim 7
Dependent Claim
17 words
The composition of claim 4 containing from about 0.1 to about 10 percent by weight of 2-dimethylaminomethyl-4-fluorophenol.
Claim 8
Dependent Claim
17 words
The composition of claim 4 containing from about 1 to about 5 percent by weight of 2-dimethylaminomethyl-4-fluorophenol.
Claim 9
Dependent Claim
4 words
The compound 2-dimethylaminomethyl-4-fluorophenol (II).
Claim 10
Dependent Claim
4 words
The compound 2-dimethylaminomethyl-4-fluorophenol (II).
Claim 11
Independent Claim
39 words
A method for improving the antiknock properties of a motor fuel which comprises incorporating therein a small but effective amount sufficient to impart reduced knocking tendendies to said motor fuel of an ashless antiknock additive which is 2-dimethylaminomethyl-4-fluorophenol (II).
Claim 12
Independent Claim
39 words
A method for improving the antiknock properties of a motor fuel which comprises incorporating therein a small but effective amount sufficient to impart reduced knocking tendendies to said motor fuel of an ashless antiknock additive which is 2-dimethylaminomethyl-4-fluorophenol (II).
Claim 13
Dependent Claim
25 words
A method according to claim 8 wherein the motor fuel is unleaded and contains from about 0.1 to about 10 weight percent of said additive.
Claim 14
Dependent Claim
13 words
A method according to claim 8 wherein said motor fuel is unleaded gasoline.
Claim 15
Dependent Claim
21 words
A method according to claim 10 wherein said gasoline contains from about 1 to about 5 weight percent of said additive.
References Cited (Backward Citations)
US2553441A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-03-28 | 1986-09-27 | 1987-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-03-28 | 1990-09-27 | 1991-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-03-28 | 1994-09-27 | 1995-03-29 | $7700.00 | Window Closed / Lapsed |