Patent US3514520A successfully refreshed from Google Patents.
US3514520A
Expired / Lapsed
US
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Linings of electrolysis,remelting,and similar furnaces,containing molten metals,alone or together with molten salts
Assignee: Montedison SpA
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Filing: 1968-01-29
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Granted: 1970-05-26
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Expires: 1988-01-29
Abstract
No abstract record available.
Inventors
- 👤 Roberto Bacchiega
- 👤 Giorgio Olah De Garab
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:21
CPC Classifications
C; C25; C25C; C25C3/00; C25C3/06; C25C3/08; C25C3/085; Y; Y02; Y02P; Y02P10/00; Y02P10/25
Claims Analysis
Total Claims: 0
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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) | 1973-05-25 | 1973-11-24 | 1974-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-25 | 1977-11-24 | 1978-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-25 | 1981-11-24 | 1982-05-26 | $7700.00 | Window Closed / Lapsed |