Patent US4405334A successfully refreshed from Google Patents.
US4405334A
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Diesel fuel composition
Assignee: Ethyl Corp
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Filing: 1982-09-27
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Granted: 1983-09-20
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Expires: 2002-09-27
Abstract
Abstract The cetane rating of diesel fuel, both hydrocarbon and alcohol, is increased by adding a 1-alkylpiperidinol nitrate ester, e.g. 1-methyl-3 or 4-piperidinol nitrate.
Inventors
- 👤 Paul D. Seemuth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:51
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/04; C07D295/08; C07D295/084; C07D295/088; C07D211/00; C07D211/04; C07D211/06; C07D211/36; C07D211/40; C07D211/42; C07D211/44; C07D211/46; C07D307/00; C07D307/02; C07D307/04; C07D307/18; C10; C10L; C10L1/00; C10L1/02; C10L1/026; C10L1/10; C10L1/14; C10L1/22; C10L1/23; C10L1/231; C10L1/232; C10L1/233; C10L1/2335; F; F02; F02B; F02B1/00; F02B1/02; F02B1/04; F02B3/00; F02B3/06
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
41 words
Liquid fuel adapted for use in a diesel engine, said fuel being selected from the group consisting of liquid hydrocarbons of the diesel boiling range, alcohols and mixtures thereof, said fuel containing a cetane number increasing amount of a 1-alkylpiperidinol nitrate.
Claim 2
Dependent Claim
41 words
Liquid fuel adapted for use in a diesel engine, said fuel being selected from the group consisting of liquid hydrocarbons of the diesel boiling range, alcohols and mixtures thereof, said fuel containing a cetane number increasing amount of a 1-alkylpiperidinol nitrate.
Claim 3
Dependent Claim
15 words
A liquid fuel composition of claim 1 wherein said 1-alkylpiperidinol nitrate is a 1-alkyl-3-piperidinol nitrate.
Claim 4
Dependent Claim
15 words
A liquid fuel composition of claim 1 wherein said 1-alkylpiperidinol nitrate is a 1-alkyl-4-piperidinol nitrate.
Claim 5
Dependent Claim
19 words
A liquid fuel composition of claim 1 wherein said fuel is a liquid hydrocarbon of the diesel boiling range.
Claim 6
Dependent Claim
15 words
A liquid fuel composition of claim 4 wherein said 1-alkylpiperidinol nitrate is a 1-alkyl-3-piperidinol nitrate.
Claim 7
Dependent Claim
14 words
A liquid fuel composition of claim 5 wherein said 1-alkyl-3-piperidinol nitrate is 1-methyl-3-piperidinol nitrate.
Claim 8
Dependent Claim
15 words
A liquid fuel composition of claim 4 wherein said 1-alkylpiperidinol nitrate is a 1-alkyl-4-piperidinol nitrate.
Claim 9
Dependent Claim
14 words
A liquid fuel composition of claim 7 wherein said 1-alkyl-4-piperidinol nitrate is 1-methyl-4-piperidinol nitrate.
Claim 10
Dependent Claim
18 words
An additive useful in increasing the cetane number of diesel fuel, said additive being a 1-alkyl piperidinol nitrate.
Claim 11
Dependent Claim
18 words
An additive useful in increasing the cetane number of diesel fuel, said additive being a 1-alkyl piperidinol nitrate.
Claim 12
Dependent Claim
10 words
An additive of claim 9 which is a 1-alkyl-3-piperidinol nitrate.
Claim 13
Dependent Claim
9 words
An additive of claim 10 which is 1-methyl-3-piperidinol nitrate.
Claim 14
Dependent Claim
10 words
An additive of claim 9 which is a 1-alkyl-4-piperidinol nitrate.
Claim 15
Dependent Claim
9 words
An additive of claim 12 which is 1-methyl-4-piperidinol nitrate.
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) | 1986-09-19 | 1987-03-21 | 1987-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-09-19 | 1991-03-21 | 1991-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-09-19 | 1995-03-21 | 1995-09-20 | $7700.00 | Window Closed / Lapsed |