Patent JPS6427684A successfully refreshed from Google Patents.
US2584151A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of blowing ferrous metal
Assignee: National Steel Corp
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Filing: 1947-11-12
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Granted: 1952-02-05
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Expires: 1967-11-12
Abstract
No abstract record available.
Inventors
- 👤 Floyd L Morrison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:46
CPC Classifications
C; C21; C21C; C21C5/00; C21C5/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
38 words
IN THE PROCESS OF BLOWING FERROUS METAL IN A CONVERTER, THE STEPS COMPRISING, CHARGING MOLTEN BLAST FURNACE IRON AND SOLID FERROUS METAL INTO A CONVERTER, BLOWING THE CHARGE WITH AN OXYGEN-ENRICHED AIR BLAST FOR A PERIOD NOT LONGER
Claim 2
Dependent Claim
38 words
IN THE PROCESS OF BLOWING FERROUS METAL IN A CONVERTER, THE STEPS COMPRISING, CHARGING MOLTEN BLAST FURNACE IRON AND SOLID FERROUS METAL INTO A CONVERTER, BLOWING THE CHARGE WITH AN OXYGEN-ENRICHED AIR BLAST FOR A PERIOD NOT LONGER
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) | 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 |