Patent US3179729A successfully refreshed from Google Patents.
Patent US3743543A successfully refreshed from Google Patents.
US3743543A
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US
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Separator for controlling alkali metal ion flow in an electrode active material or electrolyte
Assignee: Toyota Central R&D Labs Inc
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Filing: 1970-09-29
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Granted: 1973-07-03
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Expires: 1990-09-29
Abstract
Abstract A SEPARATOR FOR USE AS THE MEMBRANE SEPARATING ELECTRODE ACTIVE MATERIALS IN A SODIUM-SULFUR CELL, OR ELECTROLYTE IN A SODIUM HYDROXIDE ELECTROLYZER FOR PRODUCING SODIUM, AND COMPRISING A PARTITION MADE OF ALIPHAALUMINA WHICH IS ALKALI RESISTANT AND ELECTRICALLY INSULATING, AN OPENING FORMED IN SAID PARTITION AND EXTENDING FROM SIDE TO SIDE THEREOF, AND A MEMBER MADE OF BETAALUMINA CRYSTAL ROTATABLY JOURNALED IN SAID OPENING, WHEREBY THE FLOW OF ALKALI METAL IONS FROM ONE SIDE OF THE PARTITION TO THE OTHER THROUGH SAID ROTATABLE MEMBER IS CONTROLLED BY TURNING SAID MEMBER TO CHANGE IS CONDUCTIVITY.
Inventors
- 👤 T Chiku
- 👤 O Kamigaito
- 👤 A Isogai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:01
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/36; H01M10/39; H01M10/3909; H01M50/00; H01M50/40; H01M50/463; 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) | 1976-07-02 | 1977-01-01 | 1977-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-02 | 1981-01-01 | 1981-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-02 | 1985-01-01 | 1985-07-03 | $7700.00 | Window Closed / Lapsed |