US2861879A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for the production of iron from steel scrap
Assignee: Easton Metal Powder Co Inc
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Filing: 1957-03-25
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Granted: 1958-11-25
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Expires: 1977-03-25
Abstract
No abstract record available.
Inventors
- 👤 Michalke Max
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:10
CPC Classifications
F; F27; F27B; F27B1/00; B; B22; B22F; B22F9/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
THE PROCESS FOR THE MANUFACTURE OF IRON POWDER FROM IRON HAVING A CARBON CONTENT IN EXCESS OF 3%, A SILICON CONTENT BELOW 0.5%, AND A SULPHUR CONTENT BELOW ABOUT 0.15%, WHICH COMPRISES MELTING STEEL SCRAP IN AN ACID-LINED CUPOLA FURNACE BY MEANS OF A FUEL CONSISTING ESSENTIALLY OF ELECTRODE CARBON AND ATOMIZING THE MOLTEN IRON THUS PRODUCED BY MEANS OF AN OXIDIZING GAS UNDER PRESSURE THEREBY TO PROVIDE A GRANULAR PRODUCT CONTAINING IRON, CARBON AND OXYGEN, TOGETHER WITH SMALL AMOUNTS OF SILICON AND SULPHUR.
Claim 2
Dependent Claim
84 words
THE PROCESS FOR THE MANUFACTURE OF IRON POWDER FROM IRON HAVING A CARBON CONTENT IN EXCESS OF 3%, A SILICON CONTENT BELOW 0.5%, AND A SULPHUR CONTENT BELOW ABOUT 0.15%, WHICH COMPRISES MELTING STEEL SCRAP IN AN ACID-LINED CUPOLA FURNACE BY MEANS OF A FUEL CONSISTING ESSENTIALLY OF ELECTRODE CARBON AND ATOMIZING THE MOLTEN IRON THUS PRODUCED BY MEANS OF AN OXIDIZING GAS UNDER PRESSURE THEREBY TO PROVIDE A GRANULAR PRODUCT CONTAINING IRON, CARBON AND OXYGEN, TOGETHER WITH SMALL AMOUNTS OF SILICON AND SULPHUR.
References Cited (Backward Citations)
US92480A
Cited
US2164727A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-24 | 1962-05-26 | 1962-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-24 | 1966-05-26 | 1966-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-24 | 1970-05-26 | 1970-11-25 | $7700.00 | Window Closed / Lapsed |