Patent US1691247A successfully refreshed from Google Patents.
Patent US4215997A successfully refreshed from Google Patents.
US4215997A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel compositions containing tetracoordinated cobalt compounds
Assignee: Octel America Inc
•
Filing: 1979-07-10
•
Granted: 1980-08-05
•
Expires: 1999-07-10
Abstract
Abstract Hydrocarbon fuel compositions containing at least one divalent tetracoordinated cobalt compound represented by the structure ##STR1## wherein: R 1 , R 2 and R 3 are each independently selected from hydrogen and C 1-6 alkyl, and R 4 is a branched C 3-6 alkyl wherein the branching is on either or both of the number 1 and 2 carbon atoms of said alkyl group.
Inventors
- 👤 Charles A. Sandy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:36
CPC Classifications
C; C10; C10L; C10L10/00; C10L10/10; C10L1/00; C10L1/10; C10L1/14; C10L1/30; C10L1/305
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
98 words
A hydrocarbon fuel composition comprising liquid hydrocarbons boiling in the range of about 20° C. to 400° C., and an amount to provide about 0.02 to 5 grams of cobalt metal per gallon of said hydrocarbon fuel composition of at least one divalent tetracoordinated cobalt compound represented by the structure ##STR6## wherein: R 1 , R 2 and R 3 are independently selected from hydrogen and C 1-6 alkyl, and R 4 is a branched C 3-6 alkyl wherein the branching is on either or both of the number 1 and 2 carbon atoms of said alkyl group.
Claim 2
Dependent Claim
98 words
A hydrocarbon fuel composition comprising liquid hydrocarbons boiling in the range of about 20° C. to 400° C., and an amount to provide about 0.02 to 5 grams of cobalt metal per gallon of said hydrocarbon fuel composition of at least one divalent tetracoordinated cobalt compound represented by the structure ##STR6## wherein: R 1 , R 2 and R 3 are independently selected from hydrogen and C 1-6 alkyl, and R 4 is a branched C 3-6 alkyl wherein the branching is on either or both of the number 1 and 2 carbon atoms of said alkyl group.
Claim 3
Dependent Claim
25 words
The composition according to claim 1 wherein said hydrocarbon components are hydrocarbons boiling in the gasoline boiling range of about 20° C. to 225° C.
Claim 4
Dependent Claim
22 words
The composition according to claim 2 wherein R 1 is methyl, ethyl, isopropyl or tertiary butyl and R 2 =R 3 =hydrogen.
Claim 5
Dependent Claim
15 words
The composition according to claim 3 wherein R 1 is methyl, isopropyl or tertiary butyl.
Claim 6
Dependent Claim
14 words
The composition according to claim 1 wherein R 4 is isopropyl or tertiary butyl.
Claim 7
Dependent Claim
14 words
The composition according to claim 2 wherein R 4 is isopropyl or tertiary butyl.
Claim 8
Dependent Claim
14 words
The composition according to claim 3 wherein R 4 is isopropyl or tertiary butyl.
Claim 9
Dependent Claim
14 words
The composition according to claim 4 wherein R 4 is isopropyl or tertiary butyl.
Claim 10
Dependent Claim
22 words
The composition according to claim 1 wherein R 1 =methyl, R 2 =R 3 =hydrogen, and R 4 =isopropyl or tertiary butyl.
Claim 11
Dependent Claim
19 words
The composition according to claim 9 wherein R 1 =methyl, R 2 =R 3 =hydrogen, and R 4 =isopropyl.
References Cited (Backward Citations)
US2737932A
Cited
GB287192A
Cited
US2023372A
Cited
US2086775A
Cited
US2235466A
Cited
US2902983A
Cited
US3088961A
Cited
US3088960A
Cited
US3113145A
Cited
US3141031A
Cited
US3157682A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-08-05 | 1984-02-04 | 1984-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-08-05 | 1988-02-04 | 1988-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-08-05 | 1992-02-04 | 1992-08-05 | $7700.00 | Window Closed / Lapsed |