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Patent US3079249A successfully refreshed from Google Patents.
US3079249A
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Method for refining iron using technically pure oygen
Assignee: Air Liquide SA
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Filing: 1960-02-08
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Granted: 1963-02-26
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Expires: 1980-02-08
Abstract
No abstract record available.
Inventors
- 👤 Moustier Marie Edouard De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:06
CPC Classifications
C; C21; C21C; C21C5/00; C21C5/28; C21C5/30; C21C5/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
IN A STEEL MAKING PROCESS IN WHICH JETS OF TECHNICALLY PURE OXYGEN ARE INJECTED FROM BELOW INTO A MOLTEN BATH OF IRON AT A HIGH PRESSURE OF AT LEAST 20 KG. PER. SQ. CM., THE IMPROVEMENT WHICH COMPRISES SIMULTANEOUSLY INJECTING FROM BELOW INTO SAID BATH A FLUIDIZED SUSPENSION OF A POWDERED BASIS REAGENT SELECTED FROM THE GROUP CONSISING OF OXIDES AND CARBONATES OF ALKALINE AND ALKALINE EARTH METALS, AND CAUSING SAID REAGENT TO MIX WITH THE OXYGEN IN THE DEEPER PART OF THE BATH.
Claim 2
Dependent Claim
84 words
IN A STEEL MAKING PROCESS IN WHICH JETS OF TECHNICALLY PURE OXYGEN ARE INJECTED FROM BELOW INTO A MOLTEN BATH OF IRON AT A HIGH PRESSURE OF AT LEAST 20 KG. PER. SQ. CM., THE IMPROVEMENT WHICH COMPRISES SIMULTANEOUSLY INJECTING FROM BELOW INTO SAID BATH A FLUIDIZED SUSPENSION OF A POWDERED BASIS REAGENT SELECTED FROM THE GROUP CONSISING OF OXIDES AND CARBONATES OF ALKALINE AND ALKALINE EARTH METALS, AND CAUSING SAID REAGENT TO MIX WITH THE OXYGEN IN THE DEEPER PART OF THE BATH.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-02-25 | 1966-08-27 | 1967-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-25 | 1970-08-27 | 1971-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-25 | 1974-08-27 | 1975-02-26 | $7700.00 | Window Closed / Lapsed |