Patent US3558364A successfully refreshed from Google Patents.
US3558364A
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US
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Leak-proof galvanic cell employing granular anion exchange compound separator
Assignee: VARTA GmbH
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Filing: 1969-10-16
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Granted: 1971-01-26
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Expires: 1989-10-16
Abstract
Abstract A LEAK-PROOF ELECTRIC CELL IS FORMED BY ARRANGING A SEPARATOR LAYER CONSISTING OF A GRANULAR SWELLABLE ANION EXCHANGE COMPOUND OR A MIXTURE OF SUCH ANION AND CATION EXCHANGE COMPOUNDS BETWEEN THE NEGATIVE ELECTRODE AND THE DEPOLARIZER OF THE CELL. THE CELL IS MADE BY APPLYING A SUSPENSION OF THE ANION EXCHANGE COMPOUND IN A SOLUTION OF A BINDING AGENT TO THE INNER WALL OF A CUP-SHAPED METAL ELECTRODE, PREFERABLY A ZINC CUP ELECTRODE AND THEN REMOVING THE SOLVENT SO AS TO LEAVE A UNIFORM FILM ON THE INNER WALL OF THE ELECTRODE CUP.
Inventors
- 👤 Winfried Krey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:19
CPC Classifications
H; H01; H01M; H01M6/00; H01M6/04; H01M6/06; H01M6/08; B; B01; B01J; B01J41/00; H01M6/22; 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) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |