Patent US3140241A successfully refreshed from Google Patents.
US3140241A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Processes for producing carbonaceous materials
Assignee: FMC Corp
•
Filing: 1959-06-18
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Granted: 1964-07-07
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Expires: 1979-06-18
Abstract
No abstract record available.
Inventors
- 👤 Work Josiah
- 👤 Robert T Joseph
- 👤 John H Blake
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:01
CPC Classifications
C; C10; C10L; C10L9/00; C10L9/02; B; B01; B01D; B01D53/00; B01D53/34; C10B; C10B49/00; C10B49/02; C10B49/04; C10B49/08; C10B49/10; C10B53/00; C10B53/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
A PROCESS OF PRODUCING CARBONACEOUS MATERIAL WHICH COMPRISES HEATING NON-COKING OF 250*F. TO 500*F. IN AN ATMOSPHERE CONTAINING FROM 1% TO 8% BY VOLUME OF OXYGEN FOR FROM 5 MINUTES TO 3 HOURS TO PRODUCE CATALYZED COAL PARTICLES CONDITIONED SO THAT IN THE NEXT HEATING STAGE THE CONTENT OF HYDROCARBONACEOUS MATTER IN THE COAL IS REDUCED; HEATING THE CATALYZED COAL PARTICLES TO A STILL HIGHER TEMPERATURE BUT NOT EXCEEDING 1200*F. AND MAINTAINING THEM THEM AT SAID HIGHER TEMPERATURE FOR FROM 10 TO 60 MINUTES TO EVOLVE VAPORS AND PRODUCE CHAR WHICH HAS A MARKEDLY LOWER VOLATILE COMBUSTIBLE MATERIAL CONTENT THAN THE PARENT COAL; AND HEATING THE CHAR TO A STILL HIGHER TEMPERATURE WITHIN THE RANGE OF FROM 1400* F. TO 1800*F. AND MAINTAINING THE HEATED CHAR AT SAID
Claim 2
Dependent Claim
128 words
A PROCESS OF PRODUCING CARBONACEOUS MATERIAL WHICH COMPRISES HEATING NON-COKING OF 250*F. TO 500*F. IN AN ATMOSPHERE CONTAINING FROM 1% TO 8% BY VOLUME OF OXYGEN FOR FROM 5 MINUTES TO 3 HOURS TO PRODUCE CATALYZED COAL PARTICLES CONDITIONED SO THAT IN THE NEXT HEATING STAGE THE CONTENT OF HYDROCARBONACEOUS MATTER IN THE COAL IS REDUCED; HEATING THE CATALYZED COAL PARTICLES TO A STILL HIGHER TEMPERATURE BUT NOT EXCEEDING 1200*F. AND MAINTAINING THEM THEM AT SAID HIGHER TEMPERATURE FOR FROM 10 TO 60 MINUTES TO EVOLVE VAPORS AND PRODUCE CHAR WHICH HAS A MARKEDLY LOWER VOLATILE COMBUSTIBLE MATERIAL CONTENT THAN THE PARENT COAL; AND HEATING THE CHAR TO A STILL HIGHER TEMPERATURE WITHIN THE RANGE OF FROM 1400* F. TO 1800*F. AND MAINTAINING THE HEATED CHAR AT 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) | 1967-07-07 | 1968-01-06 | 1968-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-07 | 1972-01-06 | 1972-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-07 | 1976-01-06 | 1976-07-07 | $7700.00 | Window Closed / Lapsed |