US3089767A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus of treating ingots of iron or steel
Assignee: Voestalpine AG
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Filing: 1960-04-27
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Granted: 1963-05-14
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Expires: 1980-04-27
Abstract
No abstract record available.
Inventors
- 👤 Rinesch Rudolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:48
CPC Classifications
B; B22; B22D; B22D27/00; B22D27/09; B22D27/13
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
A METHOD OF TREATING INGOTS OF A METAL OF THE CLASS CONSISTING OF IRON AND STEEL COMPRISING POURING THE MOLTEN METAL INTO AN INGOT MOLD, COOLING THE METAL TO FORM A SOLIDIFIED OUTER PORTION AND FORM A PASTY CENTRAL REGION IN THE UPPER PORTION OF THE INGOT IN THE MOLD, THEN BLOWING A JET OF HIGH-OXYGEN GAS HAVING FINELY-DIVIDED BASIC SLAG-FORMING AGENTS COMPRISING LIME AND CALCINED SODIUM CARBONATE SUSPENDED THEREIN AGAINST THE PASTY CENTRAL REGION OF THE INGOT AND CONTINUING BLOWING UNTIL PHOSPHORUS AND SULFUR IN SAID CENTRAL REGION ARE REDUCED TO NOT SUBSTANTIALLY IN EXCESS OF THEIR DESIRED FINAL CONTENT IN THE INGOT, AND TERMINATING BLOWING TO ENABLE SEGREGATION OF THE SULFUR AND PHOSPHORUS TO CONTINUE IN SAID CENTRAL REGION OF THE INGOT.
Claim 2
Independent Claim
124 words
A METHOD OF TREATING INGOTS OF A METAL OF THE CLASS CONSISTING OF IRON AND STEEL COMPRISING POURING THE MOLTEN METAL INTO AN INGOT MOLD, COOLING THE METAL TO FORM A SOLIDIFIED OUTER PORTION AND FORM A PASTY CENTRAL REGION IN THE UPPER PORTION OF THE INGOT IN THE MOLD, THEN BLOWING A JET OF HIGH-OXYGEN GAS HAVING FINELY-DIVIDED BASIC SLAG-FORMING AGENTS COMPRISING LIME AND CALCINED SODIUM CARBONATE SUSPENDED THEREIN AGAINST THE PASTY CENTRAL REGION OF THE INGOT AND CONTINUING BLOWING UNTIL PHOSPHORUS AND SULFUR IN SAID CENTRAL REGION ARE REDUCED TO NOT SUBSTANTIALLY IN EXCESS OF THEIR DESIRED FINAL CONTENT IN THE INGOT, AND TERMINATING BLOWING TO ENABLE SEGREGATION OF THE SULFUR AND PHOSPHORUS TO CONTINUE IN SAID CENTRAL REGION OF THE INGOT.
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) | 1966-05-13 | 1966-11-12 | 1967-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-13 | 1970-11-12 | 1971-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-13 | 1974-11-12 | 1975-05-14 | $7700.00 | Window Closed / Lapsed |