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Patent US4390345A successfully refreshed from Google Patents.
US4390345A
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Fuel compositions and additive mixtures for reducing hydrocarbon emissions
Assignee: Individual
•
Filing: 1980-11-17
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Granted: 1983-06-28
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Expires: 2000-11-17
Abstract
Abstract Gasoline compositions and additive mixtures containing compounds having the formula: ##STR1## wherein R 1 -R 6 are each independently selected from hydrogen or hydrocarbyl radicals in an amount sufficient to reduce exhaust hydrocarbon emissions from an internal combustion engine being operated on gasoline containing a cyclopentadienyl manganese antiknock. Preferred hydrocarbon exhaust emission reducing compounds are 1,3-dioxolane and the lower alkyl and alkenyl substituted derivatives thereof.
Inventors
- 👤 Gabor A. Somorjai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:19
CPC Classifications
C; C10; C10L; C10L10/00; C10L10/02; C10L1/00; C10L1/10; C10L1/14; C10L10/10; C10L1/18; C10L1/185; C10L1/1852; C10L1/1855; C10L1/30; C10L1/305
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
79 words
As a composition of matter, a lead-free or substantially lead-free hydrocarbon fuel composition for use in a spark ignited internal combustion engine to reduce hydrocarbon emissions comprising (i) a major amount of hydrocarbons boiling in the gasoline boiling range, (ii) an antiknock amount of a cyclopentadienyl manganese tricarbonyl antiknock compound, and (iii) an exhaust emission reducing amount of a compound having the general formula: ##STR8## wherein R 1 -R 6 are each independently selected from hydrogen or hydrocarbyl radicals.
Claim 2
Dependent Claim
79 words
As a composition of matter, a lead-free or substantially lead-free hydrocarbon fuel composition for use in a spark ignited internal combustion engine to reduce hydrocarbon emissions comprising (i) a major amount of hydrocarbons boiling in the gasoline boiling range, (ii) an antiknock amount of a cyclopentadienyl manganese tricarbonyl antiknock compound, and (iii) an exhaust emission reducing amount of a compound having the general formula: ##STR8## wherein R 1 -R 6 are each independently selected from hydrogen or hydrocarbyl radicals.
Claim 3
Dependent Claim
21 words
The composition of claim 1 where said cyclopentadienyl group is a hydrocarbon group containing from 5 to about 17 carbon atoms.
Claim 4
Dependent Claim
11 words
The composition of claim 2 wherein said cyclopentadienyl group is methylcyclopentadienyl.
Claim 5
Dependent Claim
21 words
The composition of claim 3 wherein said hydrocarbyl radical is an alkyl radical having from 1 to about 4 carbon atoms.
Claim 6
Dependent Claim
11 words
The composition of claim 4 wherein said alkyl radical is methyl.
Claim 7
Dependent Claim
11 words
The composition of claim 4 wherein said alkyl radical is ethyl.
Claim 8
Dependent Claim
21 words
The composition of claim 3 wherein said hydrocarbyl radical is an alkenyl radical having from 2 to about 4 carbon atoms.
Claim 9
Dependent Claim
13 words
The composition of claim 3 wherein R 1 -R 6 are each hydrogen.
Claim 10
Dependent Claim
40 words
An additive fluid for gasoline to reduce hydrocarbon emissions comprising (i) a cyclopentadienyl manganese tricarbonyl antiknock compound, and (ii) a compound having the general formula: ##STR9## wherein R 1 -R 6 are each independently selected from hydrogen or hydrocarbyl radicals.
Claim 11
Dependent Claim
40 words
An additive fluid for gasoline to reduce hydrocarbon emissions comprising (i) a cyclopentadienyl manganese tricarbonyl antiknock compound, and (ii) a compound having the general formula: ##STR9## wherein R 1 -R 6 are each independently selected from hydrogen or hydrocarbyl radicals.
Claim 12
Dependent Claim
20 words
The additive fluid or claim 9 wherein said fluid contains an antiknock amount of said cyclopentadienyl manganese tricarbonyl antiknock compound.
Claim 13
Dependent Claim
40 words
The additive fluid of claim 9 wherein said fluid contains an amount sufficient to reduce exhaust hydrocarbon emissions of a compound having the general formula: ##STR10## wherein R 1 -R 6 are each independently selected from hydrogen or hydrocarbyl radicals.
Claim 14
Dependent Claim
22 words
The additive fluid of claim 9 wherein said cyclopentadienyl group is a hydrocarbon group containing from 5 to about 17 carbon atoms.
Claim 15
Dependent Claim
12 words
The additive fluid of claim 12 wherein said cyclopentadienyl group is methylcyclopentadienyl.
Claim 16
Dependent Claim
22 words
The additive fluid of claim 13 wherein said hydrocarbyl radical is an alkyl radical having from 1 to about 4 carbon atoms.
Claim 17
Dependent Claim
12 words
The additive fluid of claim 14 wherein said alkyl radical is methyl.
Claim 18
Dependent Claim
12 words
The additive fluid of claim 14 wherein said alkyl radical is ethyl.
Claim 19
Dependent Claim
22 words
The additive fluid of claim 13 wherein said hydrocarbyl group is an alkenyl group having from 2 to about 4 carbon atoms.
Claim 20
Dependent Claim
14 words
The additive fluid of claim 13 wherein R 1 -R 6 are each hydrogen.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-06-27 | 1986-12-27 | 1987-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-06-27 | 1990-12-27 | 1991-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-06-27 | 1994-12-27 | 1995-06-28 | $7700.00 | Window Closed / Lapsed |