US2726148A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of low sulfur solid carbonaceous fuels
Assignee: Gulf Research and Development Co
•
Filing: 1950-06-09
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Granted: 1955-12-06
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Expires: 1970-06-09
Abstract
No abstract record available.
Inventors
- 👤 Joseph B Mckinley
- 👤 Alfred M Henke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:23
CPC Classifications
C; C10; C10L; C10L9/00; C10L9/02; C10L9/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
A PROCESS FOR DESULFURIZING COAL WITHOUT EXCESSIVE CONVERSION OF THE COAL INTO GAS OR VAPOR WHICH COMPRISES CONTACTING A COMMINUTED SOLID MASS CONSISTING OF COAL OF HIGH PYRITIC SULFUR CONTENT SELECTED FROM THE GROUP CONSISTING OF ANTHRACITE, BITUMINOUS AND SUB-BITUMINOUS COAL WITH A STREAM OF HYDROGEN UNDER A PRESSURE OF ABOUT 300 TO 500 P. S. I. G., AT A TEMPERATURE OF BETWEEN 300* AND 350* C. AND MAINTAINING SAID CONDITIONS UNTIL A LARGE AMOUNT OF SULFUR CONTAINED IN THE COAL HAS BEEN REMOVED WITHOUT VOLATILIZATION OF A PROPORTIONATELY LARGE AMOUNT OF THE COAL.
Claim 2
Dependent Claim
94 words
A PROCESS FOR DESULFURIZING COAL WITHOUT EXCESSIVE CONVERSION OF THE COAL INTO GAS OR VAPOR WHICH COMPRISES CONTACTING A COMMINUTED SOLID MASS CONSISTING OF COAL OF HIGH PYRITIC SULFUR CONTENT SELECTED FROM THE GROUP CONSISTING OF ANTHRACITE, BITUMINOUS AND SUB-BITUMINOUS COAL WITH A STREAM OF HYDROGEN UNDER A PRESSURE OF ABOUT 300 TO 500 P. S. I. G., AT A TEMPERATURE OF BETWEEN 300* AND 350* C. AND MAINTAINING SAID CONDITIONS UNTIL A LARGE AMOUNT OF SULFUR CONTAINED IN THE COAL HAS BEEN REMOVED WITHOUT VOLATILIZATION OF A PROPORTIONATELY LARGE AMOUNT OF THE COAL.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-12-05 | 1959-06-06 | 1959-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-05 | 1963-06-06 | 1963-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-05 | 1967-06-06 | 1967-12-06 | $7700.00 | Window Closed / Lapsed |