Patent US2952533A successfully refreshed from Google Patents.
US2952533A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of operating a furnace in which the material treated is reduced
Assignee: Individual
•
Filing: 1957-02-18
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Granted: 1960-09-13
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Expires: 1977-02-18
Abstract
No abstract record available.
Inventors
- 👤 Cuscoleca Otwin
- 👤 Pichler Werner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:01
CPC Classifications
C; C21; C21B; C21B5/00; C21B5/001; C21B13/00; C21B13/02; Y; Y02; Y02P; Y02P10/00; Y02P10/10; Y02P10/134
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
A METHOD OF OPERATING A FURNACE FOR REDUCING METALLIC ORES HAVING A COMBUSTION ZONE AND A REDUCTION ZONE, COMPRISING SUPPLY A SOLID FUEL TO SAID COMBUSTION ZONE, THE AMOUNT OF SAID SOLID FUEL BEING INSUFFICIENT FOR REDUCING THE ORE TREATED, THEREBY SAVING A PART OF THE SOLID FUEL REQUIRED WHEN COMPARED WITH THE AMOUNT WHICH WOULD BE REQUIRED FOR RUNNING THE FURNACE WITH SOLID FUEL ALONE, BLOWING AN AMOUNT OF REDUCING FLUID INTO SAID REDUCTION ZONE WHICH REPLACES SAID SAVED PART OF SOLID FUEL, REPLACING A PART OF THE COMBUSTION AIR REQUIRED
Claim 2
Independent Claim
92 words
A METHOD OF OPERATING A FURNACE FOR REDUCING METALLIC ORES HAVING A COMBUSTION ZONE AND A REDUCTION ZONE, COMPRISING SUPPLY A SOLID FUEL TO SAID COMBUSTION ZONE, THE AMOUNT OF SAID SOLID FUEL BEING INSUFFICIENT FOR REDUCING THE ORE TREATED, THEREBY SAVING A PART OF THE SOLID FUEL REQUIRED WHEN COMPARED WITH THE AMOUNT WHICH WOULD BE REQUIRED FOR RUNNING THE FURNACE WITH SOLID FUEL ALONE, BLOWING AN AMOUNT OF REDUCING FLUID INTO SAID REDUCTION ZONE WHICH REPLACES SAID SAVED PART OF SOLID FUEL, REPLACING A PART OF THE COMBUSTION AIR REQUIRED
References Cited (Backward Citations)
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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) | 1963-09-13 | 1964-03-14 | 1964-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-13 | 1968-03-14 | 1968-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-13 | 1972-03-14 | 1972-09-13 | $7700.00 | Window Closed / Lapsed |