US3666438A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of manganese-silicon alloy
Assignee: Globe Metallurgical Inc
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Filing: 1970-11-16
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Granted: 1972-05-30
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Expires: 1990-11-16
Abstract
Abstract A PROCESS FOR THE PRODUCTION OF A MANGANESE-SILICIDE ALLOY HAVING A LOW CARBON CONTENT INCLUDING SMELTING MANGANESE ORE, SILICON METAL AND MANGANESE-SILICON SLAG IN AN ELECTRIC FURNACE WITH SUFFICIENT CARBONACEOUS REDUCTANT TO PROVIDE A MELT OF MANGANESE-SILICIDE ALLOW A THROWAWAY SLAG, INTRODUCE THE MELT INTO A LADLE, AND THEN SEP ARATING REMOVING THE ALLOY AND THROW-AWAY SLAG FROM THE LADLE. THE CARBON IS USED AS AN EXCLUSIVE REDUCING AGENT AND THE SILICON IS USED ONLY FOR ALLOYING PURPOSES. IN THE INVENTION, THE THROW-AWAY SLAG CONTAINS MANGANESE VALUES AND IT RECYCLED, THUS MAKING POSSIBLE THE DIRECT USE OF MANGANESE ORE AS THE MANGANESE BEARING MATERIAL. D R A W I N G
Inventors
- 👤 Ivo Madronic
- 👤 Akgun Mertdogan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:26
CPC Classifications
C; C22; C22B; C22B4/00; C22B4/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-30 | 1975-11-29 | 1976-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-30 | 1979-11-29 | 1980-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-30 | 1983-11-29 | 1984-05-30 | $7700.00 | Window Closed / Lapsed |