Patent US3313252A successfully refreshed from Google Patents.
US3313252A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drying and burning of pipeline coal
Assignee: Combustion Engineering Inc
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Filing: 1965-12-20
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Granted: 1967-04-11
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Expires: 1985-12-20
Abstract
No abstract record available.
Inventors
- 👤 Jonakin James
- 👤 Robert C Tulis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 19:15
CPC Classifications
F; F23; F23K; F23K1/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
A METHOD FOR FEEDING PIPELINE COAL TO A FURNACE COMPRISING FEEDING A PUMPABLE SLURRY OF CRUSHED COAL AND WATER, CONTAINING OVER 25 PERCENT WATER, IN A CONTINUOUS STREAM DIRECTLY FROM THE PIPELINE TO AND THROUGH A MECHANICAL DEWATERING STATION, MECHANICALLY REMOVING WATER FROM SAID CONTINUOUS STREAM AT SAID STATION THEREBY MECHANICALLY REDUCING THE WATER CONTENT OF SAID STREAM TO LESS THAN 25 PERCENT AND APPROXIMATELY FIFTEEN TO TWENTY PERCENT TO PROVIDE A CONTINUING PARTIALLY DEWATERED CONTINUOUS STREAM OF COAL AND WATER AND DIRECTING SAID
Claim 2
Independent Claim
84 words
A METHOD FOR FEEDING PIPELINE COAL TO A FURNACE COMPRISING FEEDING A PUMPABLE SLURRY OF CRUSHED COAL AND WATER, CONTAINING OVER 25 PERCENT WATER, IN A CONTINUOUS STREAM DIRECTLY FROM THE PIPELINE TO AND THROUGH A MECHANICAL DEWATERING STATION, MECHANICALLY REMOVING WATER FROM SAID CONTINUOUS STREAM AT SAID STATION THEREBY MECHANICALLY REDUCING THE WATER CONTENT OF SAID STREAM TO LESS THAN 25 PERCENT AND APPROXIMATELY FIFTEEN TO TWENTY PERCENT TO PROVIDE A CONTINUING PARTIALLY DEWATERED CONTINUOUS STREAM OF COAL AND WATER AND DIRECTING SAID
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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) | 1970-04-10 | 1970-10-10 | 1971-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-10 | 1974-10-10 | 1975-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-10 | 1978-10-10 | 1979-04-11 | $7700.00 | Window Closed / Lapsed |