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US3696008A
Expired / Lapsed
US
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Electrolytic production of aluminum
Assignee: Gas Technology Institute
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Filing: 1970-04-03
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Granted: 1972-10-03
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Expires: 1990-04-03
Abstract
Abstract AN IMPROVED ELECTROLYTIC PROCESS FOR THE PRODUCTION OF ALUMINUM FROM A MOLTEN SALT ELECTROLYTE INVOLVING THE USE OF HYDROGEN AS AN ANODIC REACTANT ON NON-CARBON ELECTRODES. THE ANODE MAY BE EITHER POROUS OR NON-POROUS METALLIC OR OTHER CONDUCTIVE MATERIAL. THE REACTION OCCURRING ON THE CATHODE SURFACE INVOLVES THE REDUCTION OF ALUMINUM CATIONS TO FORM SUBSTANTIALLY IMPURITY-FREE ALUMINUM. AT THE ANODE, HYDROGEN IS OXIDIZED TO WATER VAPOR WHICH IS DRIVEN OFF AND COLLECTED FROM ABOVE THE CRYOLITE MELT.
Inventors
- 👤 Jacob Levitan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 01:51
CPC Classifications
C; C25; C25C; C25C3/00; C25C3/06
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) | 1975-10-03 | 1976-04-03 | 1976-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-03 | 1980-04-03 | 1980-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-03 | 1984-04-03 | 1984-10-03 | $7700.00 | Window Closed / Lapsed |