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US4089658A
Expired / Lapsed
US
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Coal extraction and fuel additive made therefrom
Assignee: B D F Ltd
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Filing: 1976-09-08
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Granted: 1978-05-16
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Expires: 1996-09-08
Abstract
Abstract A process for extracting coal is provided which includes contracting coal with an admixture of water, an organic solvent, and carbon tetrachloride, and separating the organic solvent containing the coal extract. The coal extract is useful as a gasoline additive.
Inventors
- 👤 Eugene Howard Bay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:26
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/16; C10L1/1616; C10G; C10G1/00; C10G1/04; Y; Y10; Y10S; Y10S585/00; Y10S585/929; Y10S585/943
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
78 words
Process of extracting coal which comprises admixing coal, water, petroleum naphtha and carbon tetrachloride, wherein for each pound of coal from 5 to 50 pounds of water are used, and wherein for each 100 parts by volume of water from 2 to 20 parts of petroleum naphtha and from 0.25 to 10 parts by volume of carbon tetrachloride are used, and separating petroleum naphtha containing from about 0.5 to 30 weight percent coal extract from the remaining components.
Claim 2
Dependent Claim
78 words
Process of extracting coal which comprises admixing coal, water, petroleum naphtha and carbon tetrachloride, wherein for each pound of coal from 5 to 50 pounds of water are used, and wherein for each 100 parts by volume of water from 2 to 20 parts of petroleum naphtha and from 0.25 to 10 parts by volume of carbon tetrachloride are used, and separating petroleum naphtha containing from about 0.5 to 30 weight percent coal extract from the remaining components.
Claim 3
Dependent Claim
26 words
A fuel composition comprising gasoline, diesel fuel or furnace oil containing a fuel additive amount of petroleum naphtha containing coal extract prepared according to claim 1.
Claim 4
Dependent Claim
11 words
The coal extract prepared according to the process of claim 1.
Claim 5
Dependent Claim
72 words
A gasoline additive composition containing, in parts by volume, from 30 to 50 parts of a petroleum naphtha boiling in the range of from about 200° F to 300° F, from 15 to 25 parts of ortho-dichlorobenzene, from 2 to 10 parts of tricresylphosphate, from 2 to 10 parts of isopropyl alcohol, and from 0.2 to 2 parts of the organic solvent containing coal extract prepared by the process of claim 1.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-05-15 | 1981-11-14 | 1982-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-15 | 1985-11-14 | 1986-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-15 | 1989-11-14 | 1990-05-16 | $7700.00 | Window Closed / Lapsed |