US3076751A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the low temperature carbonization of bituminous coal
Assignee: United Engineers and Constructors Inc
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Filing: 1959-08-27
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Granted: 1963-02-05
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Expires: 1979-08-27
Abstract
No abstract record available.
Inventors
- 👤 Ronald G Minet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:03
CPC Classifications
C; C10; C10B; C10B49/00; C10B49/02; C10B49/04; C10B49/08; C10B49/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
A METHOD FOR THE LOW TEMPERATURE CARBONIZATION OF A NORMALLY AGGLOMERATING COAL WHICH CONSISTS ESSENTIALLY OF CHARGING A FEED STREM CONSISTING ESSENTIALLY OF FRESH FINELY DIVIDED COAL HAVING MORE THAN ABOUT 31% DRY VOLATILE MATTER AND A MOIST HEATING VALUE OF BETWEEN ABOUT 11,000 AND ABOUT 14,000 B.T.U./LB., INTO A FLUIDIZED ZONE MAINTAINED AT A TEMPERATURE BETWEEN ABOUT 800*F. AND ABOUT 840*F., AND EDUCING HYDROCARBONACEOUS MATTER FROM SAID COAL IN SAID ZONE UNTIL AT LEAST 70% BY WEIGHT OF THE TOTAL TARS AND OILS INTIALLY PRESENT IN THE COAL ARE REMOVED AND THE DRY VOLATILE CONTENT OF SAID COAL ARE REMOVED AND THE DRY VOLATILE CONTENT 26% BY WEIGHT WITHOUT SUBSTANTIAL AGGLOMERATION OF SAID COAL.
Claim 2
Independent Claim
115 words
A METHOD FOR THE LOW TEMPERATURE CARBONIZATION OF A NORMALLY AGGLOMERATING COAL WHICH CONSISTS ESSENTIALLY OF CHARGING A FEED STREM CONSISTING ESSENTIALLY OF FRESH FINELY DIVIDED COAL HAVING MORE THAN ABOUT 31% DRY VOLATILE MATTER AND A MOIST HEATING VALUE OF BETWEEN ABOUT 11,000 AND ABOUT 14,000 B.T.U./LB., INTO A FLUIDIZED ZONE MAINTAINED AT A TEMPERATURE BETWEEN ABOUT 800*F. AND ABOUT 840*F., AND EDUCING HYDROCARBONACEOUS MATTER FROM SAID COAL IN SAID ZONE UNTIL AT LEAST 70% BY WEIGHT OF THE TOTAL TARS AND OILS INTIALLY PRESENT IN THE COAL ARE REMOVED AND THE DRY VOLATILE CONTENT OF SAID COAL ARE REMOVED AND THE DRY VOLATILE CONTENT 26% BY WEIGHT WITHOUT SUBSTANTIAL AGGLOMERATION OF SAID COAL.
References Cited (Backward Citations)
US2677650A
Cited
US2955077A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-02-04 | 1966-08-06 | 1967-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-04 | 1970-08-06 | 1971-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-04 | 1974-08-06 | 1975-02-05 | $7700.00 | Window Closed / Lapsed |