US2664390A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carbonization of coal
Assignee: Texaco Inc
•
Filing: 1948-11-19
•
Granted: 1953-12-29
•
Expires: 1968-11-19
Abstract
No abstract record available.
Inventors
- 👤 Ernest F Pevere
- 👤 George B Arnold
- 👤 Howard V Hess
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:07
CPC Classifications
C; C10; C10B; C10B55/00; Y; Y10; Y10S; Y10S48/00; Y10S48/07
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
A PROCESS FOR THE CARBONIZATION OF A FUSIBLE COAL CONTAINING VOLATILIZABLE CONSTITUENTS WITH THE PRODUCTION OF DRY SOLID POWDERED COKE AND RECOVERY OF SAID VOLATILIZABLE CONSTITUENTS WHICH COMPRISES CONTACTING SAID COAL IN PARTICLE FORM WITH A NORMALLY LIQUID HYDROCARBON SOLVENT FOR COAL SUBSTANCE, AGITATING SAID COAL PARTICLES WITH SAID SOLVENT AT A TEMPERATURE ABOVE THE TEMPERATURE AT WHICH SAID COAL IS RENDERED PLASTIC AND WITHIN THE RANGE OF FROM ABOUT 550 TO ABOUT 700* F WHEREBY AND SAID COAL BECOMES MISCIBLE WITH SAID OIL SOLVENT AND A SUBSTANTIALLY HOMOGENEOUS LIQUID MIXTURE CONTAINING ALL OF THE ORIGINAL COMPONENTS OF SAID COAL IS OBTAINED, ATOMIZING SAID LIQUID MIXTURE INTO A STREAM OF A SUBSTANTIALLY
Claim 2
Dependent Claim
112 words
A PROCESS FOR THE CARBONIZATION OF A FUSIBLE COAL CONTAINING VOLATILIZABLE CONSTITUENTS WITH THE PRODUCTION OF DRY SOLID POWDERED COKE AND RECOVERY OF SAID VOLATILIZABLE CONSTITUENTS WHICH COMPRISES CONTACTING SAID COAL IN PARTICLE FORM WITH A NORMALLY LIQUID HYDROCARBON SOLVENT FOR COAL SUBSTANCE, AGITATING SAID COAL PARTICLES WITH SAID SOLVENT AT A TEMPERATURE ABOVE THE TEMPERATURE AT WHICH SAID COAL IS RENDERED PLASTIC AND WITHIN THE RANGE OF FROM ABOUT 550 TO ABOUT 700* F WHEREBY AND SAID COAL BECOMES MISCIBLE WITH SAID OIL SOLVENT AND A SUBSTANTIALLY HOMOGENEOUS LIQUID MIXTURE CONTAINING ALL OF THE ORIGINAL COMPONENTS OF SAID COAL IS OBTAINED, ATOMIZING SAID LIQUID MIXTURE INTO A STREAM OF A SUBSTANTIALLY
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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) | 1956-12-28 | 1957-06-29 | 1957-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-28 | 1961-06-29 | 1961-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-28 | 1965-06-29 | 1965-12-29 | $7700.00 | Window Closed / Lapsed |