Patent FR1492929A successfully refreshed from Google Patents.
US3483916A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ferro alloy casting process
Assignee: Elkem Metals Co LP
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Filing: 1968-01-31
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Granted: 1969-12-16
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Expires: 1988-01-31
Abstract
No abstract record available.
Inventors
- 👤 Robert A Hard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 03:42
CPC Classifications
B; B22; B22D; B22D3/00; B22D25/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2197660A
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US2452613A
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US2485492A
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US3197828A
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US3236103A
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US3221559A
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US3323899A
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US3429362A
Cited
US3373794A
Cited
US3382911A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-15 | 1973-06-16 | 1973-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-15 | 1977-06-16 | 1977-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-15 | 1981-06-16 | 1981-12-16 | $7700.00 | Window Closed / Lapsed |