US2689786A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the gasification of solid fuels
Assignee: Individual
•
Filing: 1949-12-13
•
Granted: 1954-09-21
•
Expires: 1969-12-13
Abstract
No abstract record available.
Inventors
- 👤 Hubmann Otto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:18
CPC Classifications
C; C10; C10J; C10J1/00; C10J1/207
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
A PROCESS FOR THE CONTINUOUS GASIFICATION OF SOLID FUEL UNDER AT LEAST ATMOSPHERIC PRESSUR IN A SHAFT FURNACE WHICH COMPRISES INTRODUCING A OXYGEN-CONTAINING GAS INTO A FUEL BED OF COARSEGRAINED FUEL IN A LOWER ZONE OF THE FURNACE FROM BELOW TO GASIFY SUCH FUEL, SIMULTANEOUSLY SEPARATELY GASIFYING FUEL DUST IN A SUSPENDED STATE IN AN UPPER ZONE OF THE FURNACE WITH AN OXYGEN CONTAINING GASIFYING MEDIUM, WITHDRAWING THE GASES EMITTED IN BOTH GASIFYING ZONES JOINTLY FROM A PORTION OF THE FURNACE ABOVE THE FUEL BED AND FEEDING THE COARSE-GRAINED FUEL TO THE FUEL BED THROUGH THE ZONE IN WHICH THE FUEL DUST IS GASIFIED.
Claim 2
Dependent Claim
104 words
A PROCESS FOR THE CONTINUOUS GASIFICATION OF SOLID FUEL UNDER AT LEAST ATMOSPHERIC PRESSUR IN A SHAFT FURNACE WHICH COMPRISES INTRODUCING A OXYGEN-CONTAINING GAS INTO A FUEL BED OF COARSEGRAINED FUEL IN A LOWER ZONE OF THE FURNACE FROM BELOW TO GASIFY SUCH FUEL, SIMULTANEOUSLY SEPARATELY GASIFYING FUEL DUST IN A SUSPENDED STATE IN AN UPPER ZONE OF THE FURNACE WITH AN OXYGEN CONTAINING GASIFYING MEDIUM, WITHDRAWING THE GASES EMITTED IN BOTH GASIFYING ZONES JOINTLY FROM A PORTION OF THE FURNACE ABOVE THE FUEL BED AND FEEDING THE COARSE-GRAINED FUEL TO THE FUEL BED THROUGH THE ZONE IN WHICH THE FUEL DUST IS GASIFIED.
References Cited (Backward Citations)
US1027290A
Cited
GB191107420A
Cited
US1840649A
Cited
US1792632A
Cited
US1855034A
Cited
US2111579A
Cited
US2126150A
Cited
US2216792A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-09-20 | 1958-03-22 | 1958-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-20 | 1962-03-22 | 1962-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-20 | 1966-03-22 | 1966-09-21 | $7700.00 | Window Closed / Lapsed |