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US2640792A
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Inert monatomic-gas shielded refractory metal remelting surface-defect removal process
Assignee: Union Carbide Corp
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Filing: 1951-01-29
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Granted: 1953-06-02
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Expires: 1971-01-29
Abstract
No abstract record available.
Inventors
- 👤 William O Binder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:57
CPC Classifications
C; C21; C21D; C21D3/00; C21D3/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1512787A
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US2125172A
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US2185496A
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US2405542A
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US2474023A
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US2475357A
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US2515559A
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US2532410A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-01 | 1956-12-01 | 1957-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-01 | 1960-12-01 | 1961-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-01 | 1964-12-01 | 1965-06-02 | $7700.00 | Window Closed / Lapsed |