Patent US2844334A successfully refreshed from Google Patents.
Patent US2873183A successfully refreshed from Google Patents.
US2873183A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous iron ore reduction process
Assignee: Individual
•
Filing: 1954-07-07
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Granted: 1959-02-10
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Expires: 1974-07-07
Abstract
No abstract record available.
Inventors
- 👤 Kenneth B Ray And The St Trust
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:58
CPC Classifications
C; C21; C21B; C21B13/00; C21B13/06; C21B13/14; C21B13/146; Y; Y02; Y02P; Y02P10/00; Y02P10/10; Y02P10/122; Y02P10/134
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
A PROCESS OF CONTINUOUSLY REDUCING IRON OXIDE ORE WITHOUT FUSION AND CARBURIZING THE SAME ALONG A PATH OF FLOW THROUGH A FURNACE, WHICH CONSISTS OF HEATING THE ORE TO A TEMPERATURE SUITABLE FOR REDUCTION IN A FIRST ZONE, SEPARATELY PASSING A HOT EXOTHERMICREDUCING GAS SUBSTANTIALLY FREE OF HYDROCARBON CONTAINING ENDOTHERMIC AND EXOTHERMIC COMPONENTS, THE LATTER BEING CO, THROUGH THE HEATED OXIDE AT A TEMPERATURE BETWEEN 1650-2000*F IN A SECOND ZONE TO REDUCE THE GREATER PART OF IT TO METALLIC IRON BY GASEOUS REDUCTION, VIBRATING THE REDUCED ORE TO PREVENT INCIPIENT FUSION, SEPERATELY PASSING ANOTHER RELATIVELY COOL REDUCING GAS CONTAINING CO THROUGH THE REDUCE OXIDE IN A THIRD ZONE, THEREBY COOLING THE
Claim 2
Dependent Claim
111 words
A PROCESS OF CONTINUOUSLY REDUCING IRON OXIDE ORE WITHOUT FUSION AND CARBURIZING THE SAME ALONG A PATH OF FLOW THROUGH A FURNACE, WHICH CONSISTS OF HEATING THE ORE TO A TEMPERATURE SUITABLE FOR REDUCTION IN A FIRST ZONE, SEPARATELY PASSING A HOT EXOTHERMICREDUCING GAS SUBSTANTIALLY FREE OF HYDROCARBON CONTAINING ENDOTHERMIC AND EXOTHERMIC COMPONENTS, THE LATTER BEING CO, THROUGH THE HEATED OXIDE AT A TEMPERATURE BETWEEN 1650-2000*F IN A SECOND ZONE TO REDUCE THE GREATER PART OF IT TO METALLIC IRON BY GASEOUS REDUCTION, VIBRATING THE REDUCED ORE TO PREVENT INCIPIENT FUSION, SEPERATELY PASSING ANOTHER RELATIVELY COOL REDUCING GAS CONTAINING CO THROUGH THE REDUCE OXIDE IN A THIRD ZONE, THEREBY COOLING THE
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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) | 1962-02-09 | 1962-08-11 | 1963-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-09 | 1966-08-11 | 1967-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-09 | 1970-08-11 | 1971-02-10 | $7700.00 | Window Closed / Lapsed |