Patent US3264093A successfully refreshed from Google Patents.
US3264093A
Expired / Lapsed
US
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Method for the production of alloys
Assignee: WR Grace and Co
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Filing: 1963-06-24
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Granted: 1966-08-02
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Expires: 1983-06-24
Abstract
No abstract record available.
Inventors
- 👤 Cord H Sump
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:33
CPC Classifications
C; C22; C22C; C22C1/00; C22C1/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
A METHOD OF MANUFACTURING AN ALLOY WHICH COMPRISES FUSING A REDUCIBLE RARE EARTH COMPOUND WITH A MEMBER SELECTED FROM THE GROUP CONSISTING OF SILICON AND SILICON-CONTAINING MATERIALS IN THE PRESENCE OF AT LEAST ABOUT 3% BY WEIGHT OF SILICA SUFFICIENT TO PROTECT THE OPERATING EQUIPMENT FROM ATTACK BY THE RARE EARTH METALS, THE FUSION BEING CARRIED OUT IN AN ELECTRIC ARC FURNACE USING A GRAPHITE CRUCIBLE AND GRAPHITE ELECTRODE.
Claim 2
Independent Claim
69 words
A METHOD OF MANUFACTURING AN ALLOY WHICH COMPRISES FUSING A REDUCIBLE RARE EARTH COMPOUND WITH A MEMBER SELECTED FROM THE GROUP CONSISTING OF SILICON AND SILICON-CONTAINING MATERIALS IN THE PRESENCE OF AT LEAST ABOUT 3% BY WEIGHT OF SILICA SUFFICIENT TO PROTECT THE OPERATING EQUIPMENT FROM ATTACK BY THE RARE EARTH METALS, THE FUSION BEING CARRIED OUT IN AN ELECTRIC ARC FURNACE USING A GRAPHITE CRUCIBLE AND GRAPHITE ELECTRODE.
References Cited (Backward Citations)
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US2926080A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-01 | 1970-01-31 | 1970-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-01 | 1974-01-31 | 1974-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-01 | 1978-01-31 | 1978-08-02 | $7700.00 | Window Closed / Lapsed |