US4405335A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diesel fuel composition
Assignee: Ethyl Corp
•
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 is increased by the addition of a small but effective amount of a tetrahydrofurandiol dinitrate.
Inventors
- 👤 Paul D. Seemuth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:23
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: 4
Claim 1
Independent Claim
42 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 increasing amount of a tetrahydrofurandiol dinitrate cetane improver.
Claim 2
Dependent Claim
42 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 increasing amount of a tetrahydrofurandiol dinitrate cetane improver.
Claim 3
Dependent Claim
18 words
A fuel composition of claim 1 wherein said fuel is a liquid hydrocarbon of the diesel boiling range.
Claim 4
Dependent Claim
13 words
A fuel composition of claim 2 wherein said cetane improver is tetrahydro-3,4-furandiol dinitrate.
References Cited (Backward Citations)
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US2387323A
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US2599338A
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US2858200A
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US3311559A
Cited
US3380815A
Cited
US4191536A
Cited
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 |