US2536098A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coal coking by cyclically circulated hot inert gases
Assignee: Individual
•
Filing: 1944-01-13
•
Granted: 1951-01-02
•
Expires: 1964-01-13
Abstract
No abstract record available.
Inventors
- 👤 Percy H Royster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:20
CPC Classifications
C; C10; C10B; C10B49/00; C10B49/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
148 words
THE PROCESS OF COKING COAL WHICH COMPRISES ESTABLISHING AN ENCLOSED, THERMALLY INSULATED, IMMOBILE MASS OF INITIALLY UNHEATED PARTICLES OF COAL TO FORM A BED OF SOLID DELIMITED BETWEEN A BROADLY EXTENDED GAS-PERMEABLE LOWER BOUNDING SURFACE SUBSTANTIALLY OPPOSED TO AN UPPER FREE SURFACE; CAUSING A THERMALLY STABLE NON-OXIDIZING GAS CONSISTING ESSENTIALLY OF CO, H2 AND N2 AND CONTAINING MINIMUM CONCENTRATIONS OF THE OXIDIZING CONSTITUENTS H20, CO2 AND 02, AT A TEMPERATURE SUPERHEATED AT LEAST 1150* F. ABOVE THE TEMPERATURE OF DEFORMATION OF THE COAL PARTICLES, TO ENTER AN ENCOLOSED, GAS-PERMEABLE THERMALLY INSULATED EMPTY SPACE POSITIONED ABOVE AND IMMEDIATELY CONTIGUOUS TO THE SAID UPPER SURFACE; FORCIBLY PROPELLING THE GAS TO PASS DOWNWARDLY THROUGH THE BED ALONG UNIFORM LINES OF FLUID FLOW SUBSTANTIALLY ORTHOGONAL TO THE SAID UPPER AND LOWER SURFACES; DISCHARGING THE GAS FROM THE LOWER SURFACE OF THE BED INTO AN ENCLOSED GAS-PERMEABLE EMPTY SPACE POSITIONED BELOW AND IMMEDIATELY
Claim 2
Dependent Claim
148 words
THE PROCESS OF COKING COAL WHICH COMPRISES ESTABLISHING AN ENCLOSED, THERMALLY INSULATED, IMMOBILE MASS OF INITIALLY UNHEATED PARTICLES OF COAL TO FORM A BED OF SOLID DELIMITED BETWEEN A BROADLY EXTENDED GAS-PERMEABLE LOWER BOUNDING SURFACE SUBSTANTIALLY OPPOSED TO AN UPPER FREE SURFACE; CAUSING A THERMALLY STABLE NON-OXIDIZING GAS CONSISTING ESSENTIALLY OF CO, H2 AND N2 AND CONTAINING MINIMUM CONCENTRATIONS OF THE OXIDIZING CONSTITUENTS H20, CO2 AND 02, AT A TEMPERATURE SUPERHEATED AT LEAST 1150* F. ABOVE THE TEMPERATURE OF DEFORMATION OF THE COAL PARTICLES, TO ENTER AN ENCOLOSED, GAS-PERMEABLE THERMALLY INSULATED EMPTY SPACE POSITIONED ABOVE AND IMMEDIATELY CONTIGUOUS TO THE SAID UPPER SURFACE; FORCIBLY PROPELLING THE GAS TO PASS DOWNWARDLY THROUGH THE BED ALONG UNIFORM LINES OF FLUID FLOW SUBSTANTIALLY ORTHOGONAL TO THE SAID UPPER AND LOWER SURFACES; DISCHARGING THE GAS FROM THE LOWER SURFACE OF THE BED INTO AN ENCLOSED GAS-PERMEABLE EMPTY SPACE POSITIONED BELOW AND IMMEDIATELY
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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) | 1954-01-01 | 1954-07-03 | 1955-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-01 | 1958-07-03 | 1959-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-01 | 1962-07-03 | 1963-01-02 | $7700.00 | Window Closed / Lapsed |