US3672994A
Expired / Lapsed
US
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Sodium-sulfur cell with third electrode
Assignee: General Electric Co
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Filing: 1971-01-04
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Granted: 1972-06-27
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Expires: 1991-01-04
Abstract
Abstract A SODIUM-SULFUR CELL IS DESCRIBED WHICH INCLUDES AN ANODIC REACTION ZONE, A CATHODIC REACTION ZONE, A SOLID CRYSTALLINE ION CONDUCTIVE ELECTROLYTE THEREBETWEEN, AND A THIRD ELECTRODE POSITIONED IN THE CATHODIC REACTION ZONE AND INSULATED ELECTRICALLY FROM A PORTION OF THE CATHODIC REACTION ZONE. ONE TYPE OF THIRD ELECTRODE FOR THIS CELL HAS A METAL MESH ADJACENT THE SOLID ELECTROLYTE. A THIN POROUS INSULATOR IS POSITIONED ON OPPOSITE SURFACE OF THE METAL MESH ADJACENT THE CATHODIC REACTION MATERIAL. A METHOD OF CHARGING A SODIUM-SULFUR CELL EMPLOYING SUCH A THIRD ELECTRODE IS DESCRIBED ALSO.
Inventors
- 👤 Stephan P Mitoff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:43
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/36; H01M10/39; H01M10/3909; Y; Y02; Y02E; Y02E60/00; Y02E60/10
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) | 1975-06-27 | 1975-12-27 | 1976-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-27 | 1979-12-27 | 1980-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-27 | 1983-12-27 | 1984-06-27 | $7700.00 | Window Closed / Lapsed |