US2584152A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of blowing iron
Assignee: National Steel Corp
•
Filing: 1951-07-02
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Granted: 1952-02-05
•
Expires: 1971-07-02
Abstract
No abstract record available.
Inventors
- 👤 Floyd L Morrison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:25
CPC Classifications
C; C21; C21C; C21C5/00; C21C5/28
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
102 words
IN THE METHOD OF BLOWING METAL IN A CONVERTER, THE STEPS COMPRISING CHARGING INTO THE CONVERTER MOLTEN BLAST FURNACE IRON CONTAINING CARBON AND CONTAINING SILICON AND MANAGESE IN A RATIO NOT GREATER THAN 1 1/2, FIRST BLOWING THE CHARGE AND OXIDIZING CONSTITUENTS OF THE IRON, BLOWING THE CHARGE WITH AN AIR BLAST, AND THEN FINISH BLOWING THE CHARGE WITH AN OXYGEN-ENRICHED AIR BLAST CONTAINING AT LEAST 21.5% OXYGEN BY VOLUME FOR A PERIOD OF AT LEAST 1/4 MINUTE AND NOT LONGER THAN 1 1/2 MINUTES AND OXIDIZING CARBON, THE BLOWN METAL AT THE END OF THE BLOW CONTAINING AT LEAST 0.25% CARBON.
References Cited (Backward Citations)
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Cited
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Cited
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Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-02-04 | 1955-08-06 | 1956-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-04 | 1959-08-06 | 1960-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-04 | 1963-08-06 | 1964-02-05 | $7700.00 | Window Closed / Lapsed |