US2744626A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the removal of ash and water from raw material containing coal
Assignee: Individual
•
Filing: 1952-12-15
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Granted: 1956-05-08
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Expires: 1972-12-15
Abstract
No abstract record available.
Inventors
- 👤 Reerink Wilhelm
- 👤 Muschenborn Walter
- 👤 Notzold Erich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:54
CPC Classifications
B; B03; B03D; B03D1/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
A PROCESS FOR REMOVING ASH AND WATER FROM RAW MATERIAL CONTAINING FINE-GRAIN COAL WHICH COMPRISES TREATING SAID RAW MATERIAL WITH A SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF OILS, TARS AND BITUMINOUS SUBSTANCES, WHEREBY THE INITIAL WATER FILMS ON THE COAL PARTICLES ARE REPLACED BY FILMS OF SAID SUBSTANCE, WHILE SIMULTANEOUSLY DISPERSING THE MIXTURE IN WATER, SAID SIMULTANEOUS FILM REPLACEMENT AND WATER DISPERSION BEING CARRIED OUT BY SUBJECTING THE PULP TO INTENSIVE TURBULENCE BY IMPARTING THERETO MOVEMENTS IN OPPOSITE DIRECTIONS, AT LEAST ONE OF SAID MOVEMENTS BEING ROTARY, THEN FORCING SAID PULP TO FLOW IN RADIAL DIRECTION IN A CONSTRICTED CURRENT, AND FINALLY SEPARATING THE RESULTING DISPERSION INTO COAL CONCENTRATE AND WASTE WATER.
Claim 2
Dependent Claim
113 words
A PROCESS FOR REMOVING ASH AND WATER FROM RAW MATERIAL CONTAINING FINE-GRAIN COAL WHICH COMPRISES TREATING SAID RAW MATERIAL WITH A SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF OILS, TARS AND BITUMINOUS SUBSTANCES, WHEREBY THE INITIAL WATER FILMS ON THE COAL PARTICLES ARE REPLACED BY FILMS OF SAID SUBSTANCE, WHILE SIMULTANEOUSLY DISPERSING THE MIXTURE IN WATER, SAID SIMULTANEOUS FILM REPLACEMENT AND WATER DISPERSION BEING CARRIED OUT BY SUBJECTING THE PULP TO INTENSIVE TURBULENCE BY IMPARTING THERETO MOVEMENTS IN OPPOSITE DIRECTIONS, AT LEAST ONE OF SAID MOVEMENTS BEING ROTARY, THEN FORCING SAID PULP TO FLOW IN RADIAL DIRECTION IN A CONSTRICTED CURRENT, AND FINALLY SEPARATING THE RESULTING DISPERSION INTO COAL CONCENTRATE AND WASTE WATER.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-08 | 1959-11-07 | 1960-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-08 | 1963-11-07 | 1964-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-08 | 1967-11-07 | 1968-05-08 | $7700.00 | Window Closed / Lapsed |