Patent US3556974A successfully refreshed from Google Patents.
US3556974A
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US
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Electrolytic cell cover
Assignee: HASKETT BARRY F
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Filing: 1968-10-24
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Granted: 1971-01-19
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Expires: 1988-10-24
Abstract
Abstract AN ELECTROLYTIC CELL IS PROVIDED HAVING A COVER OF A MATERIAL WHICH WILL CONDUCT AN ELECTRIC CURRENT, THE UNDERSURFACE OF SUCH COVER BEING FORMED OF A REFACTORY MATERIAL SUBSTANTIALLY ENTIRELY EXCEPT FOR ALLOWING CONTACT OF THE ANODES OR ANODE STEMS WITH THE CURRENT CARRYING MATERIAL. A COVER OF SUCH CONSTRUCTION ALLOWS FOR SUBSTANTIALLY LESS LOSS OF HEAT FROM THE ELECTROLYTIC CELL AND SUBSTANTIALLY LESS WEAR AND MECHANICAL FAILURE DUE TO EXCESSIVELY HIGH TEMPERATURES OF THE COVER MATERIAL.
Inventors
- 👤 George Gerald Day
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:20
CPC Classifications
C; C25; C25C; C25C7/00; C25C7/005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |