US2851351A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for blowing pig iron to steel
Assignee: Alpine Montan AG
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Filing: 1954-06-29
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Granted: 1958-09-09
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Expires: 1974-06-29
Abstract
No abstract record available.
Inventors
- 👤 Cuscoleca Otwin
- 👤 Grohs Felix
- 👤 Rosner Kurt
- 👤 Kuhnelt Wolfgang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:50
CPC Classifications
C; C21; C21C; C21C5/00; C21C5/28; C21C5/30; C21C5/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
A PROCESS FOR REFINING A PIG IRON BATH HAVING A SURFACE WHICH IS COVERED BY A LAYER OF SLAG TO CONVERT THE IRON TO STEEL, COMPRISING DIRECTING A JET OF OXIDIZING GAS FROM ABOVE AGAINST SAID LAYER OF SLAG WITH ENERGY INSUFFICIENT TO PENETRATE SAID SLAG LAYER AND INITITATE THE REACTION BETWEEN THE OXIDIZING GAS AND THE IRON BATH BY PIERCING SAID SLAG LAYER WITHIN THE IMPACT AREA OF SAID JET BY MEANS OF A SOLID BODY DURING A SHORT INTERVAL AT THE BEGINNING OF THE PROCESS TO BRING THE OZIDIZING GAS INTO CONTACT WITH SURFACE AREA OF THE PIG IRON BATH.
Claim 2
Dependent Claim
102 words
A PROCESS FOR REFINING A PIG IRON BATH HAVING A SURFACE WHICH IS COVERED BY A LAYER OF SLAG TO CONVERT THE IRON TO STEEL, COMPRISING DIRECTING A JET OF OXIDIZING GAS FROM ABOVE AGAINST SAID LAYER OF SLAG WITH ENERGY INSUFFICIENT TO PENETRATE SAID SLAG LAYER AND INITITATE THE REACTION BETWEEN THE OXIDIZING GAS AND THE IRON BATH BY PIERCING SAID SLAG LAYER WITHIN THE IMPACT AREA OF SAID JET BY MEANS OF A SOLID BODY DURING A SHORT INTERVAL AT THE BEGINNING OF THE PROCESS TO BRING THE OZIDIZING GAS INTO CONTACT WITH SURFACE AREA OF THE PIG IRON BATH.
References Cited (Backward Citations)
US411417A
Cited
US2668759A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-08 | 1962-03-10 | 1962-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-08 | 1966-03-10 | 1966-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-08 | 1970-03-10 | 1970-09-09 | $7700.00 | Window Closed / Lapsed |