US3704114A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and furnace charge for use in the production of ferrosilicon alloys
Assignee: Elkem Metals Co LP
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Filing: 1971-03-17
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Granted: 1972-11-28
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Expires: 1991-03-17
Abstract
Abstract AN AGGLOMERATED FURNACE CHARGE, AND PROCESS THEREOF, FOR USE IN THE ELECTRIC FURNACE PRODUCTION OF FERROSILICON ALLOYS HAVING 45% TO 95% SILICON BY WEIGHT. THE CHARGE COMPRISES A FINE FRACTION AND A COARSE FRACTION OF SILICA HOMOGENEOUSLY ADMIXED WITH A PARTICULATED INON-BEARING MATERIAL, A PARTICULATED CARBONACEOUS REDUCING AGENT AND A BULKING AGENT.
Inventors
- 👤 Benjamin John Wilson
- 👤 Richard J Mcclincy
- 👤 James Herbert Downing
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 01:43
CPC Classifications
C; C22; C22C; C22C33/00; C22C33/04
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) | 1975-11-28 | 1976-05-29 | 1976-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-28 | 1980-05-29 | 1980-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-28 | 1984-05-29 | 1984-11-28 | $7700.00 | Window Closed / Lapsed |