US3126276A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of reducing fine iron ore in a fluidized-solids reactor
Assignee: —
•
Filing: —
•
Granted: 1964-03-24
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Expires: 1981-03-24
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:05
CPC Classifications
C; C21; C21B; C21B13/00; C21B13/0033; Y; Y02; Y02P; Y02P10/00; Y02P10/10; Y02P10/122; Y02P10/134
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
IN A PROCESS OF REDUCING FINELY DIVIDED IRON ORE BY FLUIDIZED-SOLIDS REDUCTION, THE STEPS OF: (A) REDUCING FLUIDIZED FINELY DIVIDED IRON ORE BY MEANS OF REDUCING GASEOUS MIXTURE AT ELEVATED TEMPERATURE, (B) WITHDRAWING AND INTRODUCING INTO A CIRCULATORY SYSTEM ALL OF THE GASES DERIVED FROM SAID REDUCTION STEP, (C) SUBJECTING SAID WITHDRAWN GASES IN SAID CIRCULATORY SYSTEM TO COOLING FOR THE LOWERING OF THE MOISTURE CONTENT OF SAID GASES, WHEREBY TO INCREASE THEIR REDUCING POTENTIAL, (D) BLEEDING OUT OF SAID CLOSED SYSTEM AN AMOUNT OF THE SAID WITHDRAWN GASES THEREIN SUBSTANTIALLY EQUAL TO THE AMOUNT OF GASES PRODUCED BY THE COMBUSTION OF FUEL AS HEREINAFTER SET FORTH, (E) BURNING A MOBILE FUEL WITH OXYGEN IN THE SUBSTANTIAL ABSENCE OF INERT GASES SO AS TO PRODUCE PRODUCTS
Claim 2
Dependent Claim
126 words
IN A PROCESS OF REDUCING FINELY DIVIDED IRON ORE BY FLUIDIZED-SOLIDS REDUCTION, THE STEPS OF: (A) REDUCING FLUIDIZED FINELY DIVIDED IRON ORE BY MEANS OF REDUCING GASEOUS MIXTURE AT ELEVATED TEMPERATURE, (B) WITHDRAWING AND INTRODUCING INTO A CIRCULATORY SYSTEM ALL OF THE GASES DERIVED FROM SAID REDUCTION STEP, (C) SUBJECTING SAID WITHDRAWN GASES IN SAID CIRCULATORY SYSTEM TO COOLING FOR THE LOWERING OF THE MOISTURE CONTENT OF SAID GASES, WHEREBY TO INCREASE THEIR REDUCING POTENTIAL, (D) BLEEDING OUT OF SAID CLOSED SYSTEM AN AMOUNT OF THE SAID WITHDRAWN GASES THEREIN SUBSTANTIALLY EQUAL TO THE AMOUNT OF GASES PRODUCED BY THE COMBUSTION OF FUEL AS HEREINAFTER SET FORTH, (E) BURNING A MOBILE FUEL WITH OXYGEN IN THE SUBSTANTIAL ABSENCE OF INERT GASES SO AS TO PRODUCE PRODUCTS
References Cited (Backward Citations)
US2473795A
Cited
US2481217A
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US2547685A
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US2577730A
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US2648535A
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US2921848A
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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) | 1967-03-24 | 1967-09-23 | 1968-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-24 | 1971-09-23 | 1972-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-24 | 1975-09-23 | 1976-03-24 | $7700.00 | Window Closed / Lapsed |