US6291732B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diesel fuel for use in diesel engine-powered vehicles
Assignee: Individual
•
Filing: 2001-01-08
•
Granted: 2001-09-18
•
Expires: 2021-01-08
Abstract
Abstract A special fuel is formulated for use with diesel engines, which are employed to power vehicles such as trucks, buses, tractors and boats.
Inventors
- 👤 William A. Hubbard
- 👤 Reginald N. Spencer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:14
CPC Classifications
C; C10; C10L; C10L10/00; C10L10/02; C10L1/00; C10L1/04; C10L1/08; C10L10/08; C10L10/14
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
86 words
A diesel fuel for powering vehicular diesel engines comprising a blend of aromatic and aliphatic mineral spirits having a low sulfur content in the range of 1-10 ppm, a flash point above 125° F., an autoignition temperature in the range of about 450° F. to 500° F., will remain fluid at cold temperatures down to −40° F. and has a 90% distillation range at about 345° F. to 450° F. producing efficient fuel vaporization and facilitating starting of vehicular diesel engines even in especially cold climates.
Claim 2
Dependent Claim
86 words
A diesel fuel for powering vehicular diesel engines comprising a blend of aromatic and aliphatic mineral spirits having a low sulfur content in the range of 1-10 ppm, a flash point above 125° F., an autoignition temperature in the range of about 450° F. to 500° F., will remain fluid at cold temperatures down to −40° F. and has a 90% distillation range at about 345° F. to 450° F. producing efficient fuel vaporization and facilitating starting of vehicular diesel engines even in especially cold climates.
Claim 3
Dependent Claim
62 words
The diesel fuel of claim 1 wherein the diesel fuel has the following characteristics: Range Cetane Number 40 to 60 Flash Point (Tag Closed Cup) 125 to 155 F. Sulfur Content 1 to 10 ppm Auto Ignition Temp. F. 450 to 500 F. Distillation Range F. IBP 345 to 375 90% Rec. 370 to 450 Gel or Freeze Point Below −40 F.
Claim 4
Dependent Claim
42 words
The diesel fuel of claim 2 wherein the fuel has the following characteristics: Cetane Number 50 Flash Point (Tag Closed Cup) 145 Sulfur Content 5 Auto Ignition Temp. F. 455 Distillation Range F. 368 382 Gel or Freeze Point Below −40 F.
Claim 5
Independent Claim
33 words
The method of operating a diesel engine for powering a vehicle, comprising the step of supplying mineral spirits to said engine, thereby substantially reducing the amount of pollutants being exhausted from said engine.
Claim 6
Independent Claim
33 words
The method of operating a diesel engine for powering a vehicle, comprising the step of supplying mineral spirits to said engine, thereby substantially reducing the amount of pollutants being exhausted from said engine.
Claim 7
Dependent Claim
17 words
The method of claim 4 , whereby a blend of mineral spirits is supplied to said engine.
Claim 8
Dependent Claim
21 words
The method of claim 5 , further comprising 0% to 35% of aromatics and 65% to 100% of aliphatics by volume.
References Cited (Backward Citations)
US5389112A
Cited
US5792339A
Cited
US5730762A
Cited
US5681358A
Cited
US5853433A
Cited
US6110237A
Cited
US5814109A
Cited
US6183525B1
Cited
US6096103A
Cited
US6222082B1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2004-09-17 | 2005-03-19 | 2005-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-09-17 | 2009-03-19 | 2009-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-09-17 | 2013-03-19 | 2013-09-18 | $7700.00 | Window Closed / Lapsed |