US2750277A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for reducing and smelting iron
Assignee: Armco Inc
•
Filing: 1951-05-14
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Granted: 1956-06-12
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Expires: 1971-05-14
Abstract
No abstract record available.
Inventors
- 👤 William E Marshall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:35
CPC Classifications
C; C21; C21B; C21B13/00; C21B13/14; C21B13/143; C21B13/08; C21B13/10; C21B2100/00; C21B2100/40; C21B2100/44; Y; Y02; Y02P; Y02P10/00; Y02P10/10; Y02P10/134
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
A PROCESS OF REDUCING AND SMELTING IRON ORE WHICH COMPRISES PRODUCING IN A BATH-TYPE FURNACE WITH A MOBILE FUEL A FLAME HAVING A TEMPERATURE OF AT LEAST SUBSTANTIALLY 3000* F., THE PRODUCTS OF COMBUSTION OF WHICH ARE REDUCING TO IRON OXIDE, EMPLOYING HEAT FROM SAID FLAME TO MAINTAIN IN MOLTEN CONDITION A BATH OF IRON IN SAID FURNACE, EMPLOYING SAID REDUCING PRODUCTS OF COMBUSTION IN HEATED CONDITION OUTSIDE SAID FURNACE TO REDUCE DIVIDED IRON ORE TO IRON IN PARTICLE FORM, AND MELTING SAID REDUCED PARTICLE IRON INTO SAID BATH, SAID FLAME BEING CAUSED TO IMPINGE ON SAID BATH AND SAID REDUCED PARTICLE IRON BEING INTRODUCED INTO SAID FURNACE BELOW SAID FLAME SO AS TO BE BLOWN INTO SAID BATH THEREBY.
Claim 2
Dependent Claim
120 words
A PROCESS OF REDUCING AND SMELTING IRON ORE WHICH COMPRISES PRODUCING IN A BATH-TYPE FURNACE WITH A MOBILE FUEL A FLAME HAVING A TEMPERATURE OF AT LEAST SUBSTANTIALLY 3000* F., THE PRODUCTS OF COMBUSTION OF WHICH ARE REDUCING TO IRON OXIDE, EMPLOYING HEAT FROM SAID FLAME TO MAINTAIN IN MOLTEN CONDITION A BATH OF IRON IN SAID FURNACE, EMPLOYING SAID REDUCING PRODUCTS OF COMBUSTION IN HEATED CONDITION OUTSIDE SAID FURNACE TO REDUCE DIVIDED IRON ORE TO IRON IN PARTICLE FORM, AND MELTING SAID REDUCED PARTICLE IRON INTO SAID BATH, SAID FLAME BEING CAUSED TO IMPINGE ON SAID BATH AND SAID REDUCED PARTICLE IRON BEING INTRODUCED INTO SAID FURNACE BELOW SAID FLAME SO AS TO BE BLOWN INTO SAID BATH THEREBY.
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) | 1959-06-12 | 1959-12-12 | 1960-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-12 | 1963-12-12 | 1964-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-12 | 1967-12-12 | 1968-06-12 | $7700.00 | Window Closed / Lapsed |