US4522630A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diesel fuel composition
Assignee: ETHYL CORPORATION,RICHMOND,VIRGINIA,A CORP OF VA
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Filing: 1984-03-29
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Granted: 1985-06-11
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Expires: 2004-03-29
Abstract
Abstract Cetane number of diesel fuel is increased by the addition of a tetrahydro-2,5-furandimethanol dinitrate.
Inventors
- 👤 Paul D. Seemuth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:03
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: 6
Claim 1
Independent Claim
44 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, and said fuel containing a cetane number increasing amount of a fuel soluble tetrahydro-2,5-furandimethanol dinitrate.
Claim 2
Dependent Claim
44 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, and said fuel containing a cetane number increasing amount of a fuel soluble tetrahydro-2,5-furandimethanol dinitrate.
Claim 3
Dependent Claim
17 words
A composition of claim 1 wherein said fuel is a liquid hydrocarbon of the fuel boiling range.
Claim 4
Dependent Claim
54 words
A composition of claim 2 wherein said tetrahydro-2,5-furandimethanol dinitrate has the structure ##STR4## wherein R, R', R" and R"' are independently selected from the group consisting of hydrogen, alkyls containing 1-20 carbon atoms, cycloalkyl containing 5-8 carbon atoms, alkenyl containing 2-20 carbon atoms, aryl containing 6-12 carbon atoms and aralkyl containing 7-12 carbon atoms.
Claim 5
Dependent Claim
49 words
A composition of claim 3 wherein R and R' are hydrogen and R" and R"' are independently selected from the group consisting of alkyls containing 1-20 carbon atoms, cycloalkyl containing 5-8 carbon atoms, alkenyl containing 2-20 carbon atoms, aryl containing 6-12 carbon atoms and aralkyl containing 7-12 carbon atoms.
Claim 6
Dependent Claim
13 words
A composition of claim 3 wherein R, R', R" and R"' are hydrogen.
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) | 1988-06-10 | 1988-12-10 | 1989-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-06-10 | 1992-12-10 | 1993-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-06-10 | 1996-12-10 | 1997-06-11 | $7700.00 | Window Closed / Lapsed |