US2959527A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-restoring anode in multi-cell furnaces particularly for the electrolytic production of aluminum
Assignee: Montedison SpA
•
Filing: 1957-12-30
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Granted: 1960-11-08
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Expires: 1977-12-30
Abstract
No abstract record available.
Inventors
- 👤 Giuseppe De Varda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:19
CPC Classifications
C; C25; C25C; C25C7/00; C25C7/005; C25C3/00; C25C3/06; C25C3/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
IN A PROCESS OF PRODUCING A METAL BY ELECTROLYSIS OF A FUSED SALT BATH IN WHICH AN ELECTRIC CURRENT IS PASSED THROUGH AN ANODE, THROUGH AN INTERVENING ELECTROLYSIS FUSED-SALT-BATH-CONTAINING GAP, AND THROUGH A CATHODE, THE ANODE HAVING AN UPWARDLY-DOWNWARDLY EXTENDING BATHFACEING ANODIC SURFACE THE MAJOR COMPONENT OF DIRECTION OF WHICH IS VERTICAL, THE IMPROVEMENT COMPRISING CONTINUOUSLY AND AUTOMATICALLY RESTORING THE SAID BATH-FACING ANODIC SURFACE OF THE ANODE IN SITU BY CONTINUOUSLY DIRECTING PRE-SHAPED RENEWING CARBONACEOUS MATERIAL CONSUMABLE IN THE ELECTROLYSIS FROM ABOVE DOWNWARDLY ALONGSIDE THE BATH-FACING SURFACE ON THE ANODE, TO CONTINUOUSLY ENTER THE SPACE MADE AVAILABLE BY THE CONSUMPTION OF
Claim 2
Dependent Claim
101 words
IN A PROCESS OF PRODUCING A METAL BY ELECTROLYSIS OF A FUSED SALT BATH IN WHICH AN ELECTRIC CURRENT IS PASSED THROUGH AN ANODE, THROUGH AN INTERVENING ELECTROLYSIS FUSED-SALT-BATH-CONTAINING GAP, AND THROUGH A CATHODE, THE ANODE HAVING AN UPWARDLY-DOWNWARDLY EXTENDING BATHFACEING ANODIC SURFACE THE MAJOR COMPONENT OF DIRECTION OF WHICH IS VERTICAL, THE IMPROVEMENT COMPRISING CONTINUOUSLY AND AUTOMATICALLY RESTORING THE SAID BATH-FACING ANODIC SURFACE OF THE ANODE IN SITU BY CONTINUOUSLY DIRECTING PRE-SHAPED RENEWING CARBONACEOUS MATERIAL CONSUMABLE IN THE ELECTROLYSIS FROM ABOVE DOWNWARDLY ALONGSIDE THE BATH-FACING SURFACE ON THE ANODE, TO CONTINUOUSLY ENTER THE SPACE MADE AVAILABLE BY THE CONSUMPTION OF
References Cited (Backward Citations)
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US2480474A
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GB784695A
Cited
US2680142A
Cited
FR1119832A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-08 | 1964-05-09 | 1964-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-08 | 1968-05-09 | 1968-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-08 | 1972-05-09 | 1972-11-08 | $7700.00 | Window Closed / Lapsed |