US3156549A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of melting silicon
Assignee: EIDP Inc
•
Filing: 1958-04-04
•
Granted: 1964-11-10
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Expires: 1978-04-04
Abstract
No abstract record available.
Inventors
- 👤 Denis G Kelemen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:48
CPC Classifications
F; F27; F27D; F27D9/00; C; C01; C01B; C01B33/00; C01B33/02; C30; C30B; C30B11/00; C30B11/002; C30B13/00; C30B13/14; F27B; F27B14/00; F27B14/08; H; H10; H10P; H10P95/00; F27B14/06; F27B14/061; F27B2014/0837; F27M; F27M2001/00; F27M2001/01
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2443542A
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US2475810A
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US2686212A
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US2789039A
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US2792438A
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US2930098A
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US2872299A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-11-10 | 1968-05-11 | 1968-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-10 | 1972-05-11 | 1972-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-10 | 1976-05-11 | 1976-11-10 | $7700.00 | Window Closed / Lapsed |