US5258049A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diesel fuel composition
Assignee: Lyondell Chemical Technology LP
•
Filing: 1993-02-17
•
Granted: 1993-11-02
•
Expires: 2013-02-17
Abstract
Abstract The invention relates to diesel fuel containing the nitric acid ester of 1-phenyl ethanol as cetane improver.
Inventors
- 👤 Frank J. Liotta, Jr.
- 👤 John A. Sofranko
- 👤 Lawrence J. Karas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 00:23
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L1/23; C10L1/231; F; F02; F02B; F02B1/00; F02B1/02; F02B1/04; F02B3/00; F02B3/06
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
26 words
Diesel fuel composition comprising hydrocarbon boiling in the diesel fuel range and a cetane improving amount of the nitric acid ester of 1-phenyl ethanol ##STR2## .
Claim 2
Dependent Claim
26 words
Diesel fuel composition comprising hydrocarbon boiling in the diesel fuel range and a cetane improving amount of the nitric acid ester of 1-phenyl ethanol ##STR2## .
Claim 3
Dependent Claim
22 words
The fuel composition of claim 1 wherein the fuel contains 0.01 to 3 vol.% of the nitric acid ester of 1-phenyl ethanol.
Claim 4
Dependent Claim
18 words
The fuel composition of claim 1 wherein the sulfur content is not more than 500 ppm by weight.
References Cited (Backward Citations)
US2905540A
Cited
US4406665A
Cited
US4405334A
Cited
US4405333A
Cited
US4421522A
Cited
US4473378A
Cited
US4457763A
Cited
US4536190A
Cited
US4723963A
Cited
US4705534A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-11-01 | 1997-05-03 | 1997-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-11-01 | 2001-05-03 | 2001-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-11-01 | 2005-05-03 | 2005-11-02 | $7700.00 | Window Closed / Lapsed |