Coal converting process
Abstract
Abstract A PROCESS FOR CONVERTING COAL CONTAINING REFUSE TO A USEABLE COAL PRODUCT OF A PREDETERMINED MAXIMUM MOISTURE CONTENT, COMPRSING THE STEPS OF SEPARATING WET, REFUSE-CONTAINING COAL INTO FRACTIONS ACCORDING TO PARTICLE SIZE, INCLUDING A FINEST FRACTION AND ONE OR MORE LARGER FRACTIONS, REMOVING REFUSE AT LEAST FROM THE LARGER FRACTIONS, DEWATERING THE LARGER FRACTION TO A MOISTURE CONTENT BELOW HE PREDETERMINED MAXIMUM, AND MECHANICALLY DEWATERING THE FINEST FRACTION IN A CONTINUOUS CENTRIFUGE CONSTRUCTED TO PROVIDE A FINEST COAT OUTPUT HAVING A MOISTURE CONTENT ABOVE THE PREDETERMINED MAXIMUM WHICH, WHEN THE FRACTIONS ARE ALL RECOMBINED, WILL PROVIDE A COMBINED OISTURE CONTENT WITHIN THE PREDETERMINED MAXIMUM TO FORM SAID PRODUCT.
Inventors
- 👤 Jack N Gerwig
Bibliographic Details
Claims Analysis
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-17 | 1974-11-16 | 1975-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-17 | 1978-11-16 | 1979-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-17 | 1982-11-16 | 1983-05-18 | $7700.00 | Window Closed / Lapsed |