US2717868A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Desulfurization of low temperature carbonization char
Assignee: Consolidation Coal Co
•
Filing: 1954-04-16
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Granted: 1955-09-13
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Expires: 1974-04-16
Abstract
No abstract record available.
Inventors
- 👤 Gorin Everett
- 👤 Clyde W Zielke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:49
CPC Classifications
C; C10; C10L; C10L9/00; C10L9/02; C01; C01B; C01B32/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
THE METHOD OF TREATING LOW TEMPERATURE CARBONIZATION CHAR HAVING A HIGH SULFUR CONTENT WHICH COMPRISES CONTACTING SAID CHAR WITH A GAS CONTAINING HYDROGEN AND METHANE AND SUBSTANTIALLY NO HYDROGEN SULFIDE UNDER A PRESSURE IN THE RANGE OF 5 TO 15 ATMOSPHERES AND AT A TEMPERATURE IN THE RANGE OF 1100 TO 1700* F. FOR A PERIOD IN THE RANGE OF 10 TO 100 MINUTES AND RECOVERING THE TREATED CHAR HAVING A LOW SULFUR CONTENT.
Claim 2
Independent Claim
74 words
THE METHOD OF TREATING LOW TEMPERATURE CARBONIZATION CHAR HAVING A HIGH SULFUR CONTENT WHICH COMPRISES CONTACTING SAID CHAR WITH A GAS CONTAINING HYDROGEN AND METHANE AND SUBSTANTIALLY NO HYDROGEN SULFIDE UNDER A PRESSURE IN THE RANGE OF 5 TO 15 ATMOSPHERES AND AT A TEMPERATURE IN THE RANGE OF 1100 TO 1700* F. FOR A PERIOD IN THE RANGE OF 10 TO 100 MINUTES AND RECOVERING THE TREATED CHAR HAVING A LOW SULFUR CONTENT.
References Cited (Backward Citations)
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US2201050A
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US2342862A
Cited
US2600078A
Cited
US2693999A
Cited
GB690791A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-09-12 | 1959-03-14 | 1959-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-09-12 | 1963-03-14 | 1963-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-09-12 | 1967-03-14 | 1967-09-13 | $7700.00 | Window Closed / Lapsed |