US2627458A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of aluminum-silicon alloys
Assignee: QUEBEC METALLURG IND Ltd
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Filing: 1950-05-31
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Granted: 1953-02-03
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Expires: 1970-05-31
Abstract
No abstract record available.
Inventors
- 👤 Lyall J Lichty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:44
CPC Classifications
C; C21; C21C; C21C7/00; C21C7/04; C21C7/06; C22; C22C; C22C21/00; C22C21/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
A METHOD FOR PRODUCING AN ALLOY WHICH IS PREDOMINATELY SILICON AND ALUIMINUM IN AN ELECTRIC FURNACE, SAID METHOD BEING CHARACTERIZED BY LOW ELECTRODE CARBON CONSUMPTION AND COMPRISING SMELTING A CHARGE CONSISTING ESSENTIALLY OF FROM ABOUT 6 TO 20 PER CENT IRON OXIDE BY WEIGHT FROM ABOUT 8 TO 20 PER CENT ALUMINUM OXIDE BY WEIGHT, SILICON OXIDE AND A REDUCING AGENT, SAID CHARGE CONSISTING ESSENTIALLY OF GRAPHITIC SHALE AND THE NATURALLY OCCURRING GRAPHITE IN THE SHALE SERVING SUBSTANTIALLY AS THE SOLE REDUCING AGENT IN THE CHARGE.
Claim 2
Independent Claim
86 words
A METHOD FOR PRODUCING AN ALLOY WHICH IS PREDOMINATELY SILICON AND ALUIMINUM IN AN ELECTRIC FURNACE, SAID METHOD BEING CHARACTERIZED BY LOW ELECTRODE CARBON CONSUMPTION AND COMPRISING SMELTING A CHARGE CONSISTING ESSENTIALLY OF FROM ABOUT 6 TO 20 PER CENT IRON OXIDE BY WEIGHT FROM ABOUT 8 TO 20 PER CENT ALUMINUM OXIDE BY WEIGHT, SILICON OXIDE AND A REDUCING AGENT, SAID CHARGE CONSISTING ESSENTIALLY OF GRAPHITIC SHALE AND THE NATURALLY OCCURRING GRAPHITE IN THE SHALE SERVING SUBSTANTIALLY AS THE SOLE REDUCING AGENT IN THE CHARGE.
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) | 1956-02-03 | 1956-08-04 | 1957-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-02-03 | 1960-08-04 | 1961-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-02-03 | 1964-08-04 | 1965-02-03 | $7700.00 | Window Closed / Lapsed |