Patent US4295862A successfully refreshed from Google Patents.
US4295862A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motor fuel
Assignee: Phillips Petroleum Co
•
Filing: 1980-10-24
•
Granted: 1981-10-20
•
Expires: 2000-10-24
Abstract
Abstract Liquid hydrocarbon fuel compositions are provided containing antiknock quantities of ashless antiknock agents comprising selected acetylenic amine compounds.
Inventors
- 👤 Lyle D. Burns
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:38
CPC Classifications
C; C10; C10L; C10L10/00; C10L10/10; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L1/222; C10L1/2222; C10L1/223
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
51 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 selected from the group consisting of (I) N-methylpropargylamine, (II) N-benzylpropargylamine, (III) N-phenylpropargylamine, (IV) dipropargylamine, and (V) N,N'-diethyl-2-butyne-1,4-diamine.
Claim 2
Dependent Claim
51 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 selected from the group consisting of (I) N-methylpropargylamine, (II) N-benzylpropargylamine, (III) N-phenylpropargylamine, (IV) dipropargylamine, and (V) N,N'-diethyl-2-butyne-1,4-diamine.
Claim 3
Dependent Claim
22 words
A composition according to claim 1 wherein the motor fuel contains from about 0.5 to about 10 weight percent of said additives.
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
29 words
A gasoline composition containing an antiknock quantity of at least one ashless antiknock additive of the group consisting of N-methylpropargylamine (I), N-benzylpropargylamine (II), N-phenylpropargylamine (III), dipropargylamine (IV), and N,N'-diethyl-2-butyne-1,4-diamine.
Claim 6
Dependent Claim
29 words
A gasoline composition containing an antiknock quantity of at least one ashless antiknock additive of the group consisting of N-methylpropargylamine (I), N-benzylpropargylamine (II), N-phenylpropargylamine (III), dipropargylamine (IV), and N,N'-diethyl-2-butyne-1,4-diamine.
Claim 7
Dependent Claim
19 words
The composition of claim 4 containing from about 0.5 to about 10 percent by weight of the antiknock additive.
Claim 8
Dependent Claim
19 words
The composition of claim 4 containing from about 1 to about 5 percent by weight of the antiknock additive.
References Cited (Backward Citations)
US1592952A
Cited
US1940096A
Cited
US2270779A
Cited
US2203374A
Cited
US2333294A
Cited
US2910352A
Cited
US2881061A
Cited
US3009793A
Cited
US3133952A
Cited
US3706541A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-10-19 | 1985-04-20 | 1985-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-10-19 | 1989-04-20 | 1989-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-10-19 | 1993-04-20 | 1993-10-20 | $7700.00 | Window Closed / Lapsed |