US3562783A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for making agglomerates from coal using coal extract as binder
Assignee: Consolidation Coal Co
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Filing: 1967-03-20
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Granted: 1971-02-09
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Expires: 1987-03-20
Abstract
Abstract A PROCESS FOR MAKING AGGLOMERATES FROM NON-CAKING OR WEAKLY CAKING COALS WHICH INCLUDES TUMBLING IN A ROTARY KILN, AT AN ELEVATED FORMING TEMPERATURE, CARBONACEOUS MATERIAL OBTAINED FROM THE COAL FEEDSTOCK AND A BINDER ALSO OBTAINED FROM THE COAL FEEDSTOCK TO FORM GREEN AGGLOMERATES. THE BINDER CONTAINS A NONDISTILLABLE COAL EX- TRACT FRACTION WHICH IS FLUID AT THE FORMING TEMPERATURE IN THE KILN. THE NONDISTILLABLE COAL EXTRACT FRACTION IS OBTAINED BY SOLVENT EXTRACTION OF THE COAL FEEDSTOCK.
Inventors
- 👤 Everett Gorin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:07
CPC Classifications
C; C10; C10B; C10B53/00; C10B53/08; C10B57/00; C10B57/08
Claims Analysis
Total Claims: 0
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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) | 1974-02-08 | 1974-08-10 | 1975-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-08 | 1978-08-10 | 1979-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-08 | 1982-08-10 | 1983-02-09 | $7700.00 | Window Closed / Lapsed |