US3408232A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bromine-zinc secondary cell
Assignee: Dow Chemical Co
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Filing: 1965-07-06
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Granted: 1968-10-29
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Expires: 1985-07-06
Abstract
No abstract record available.
Inventors
- 👤 Robert D Blue
- 👤 James J Leddy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:33
CPC Classifications
H; H01; H01M; H01M12/00; H01M12/08; H01M12/085; H01M10/00; H01M10/36; H01M10/365; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
A BROMINE-ZINC SECONDARY CELL COMPRISING: A CASE, A ZINC ELECTRODE AND A POROUS CARBON ELECTRODE, SAID ELECTRODES BEING SPACED APART AND DISPOSED WITHIN SAID CASE, AND AN ELECTROLYTE SYSTEM COMPRISING A FIRST LAYER OF A WATER-INSOLUBLE ORGANIC LIQUID HAVING ELEMENTAL BROMINE DISSOLVED THEREIN AND A SECOND LAYER COMPRISING AN AQUEOUS CONDUCTING SALT SOLUTION CONTAINING ZINC BROMIDE, SAID SECOND LAYER DISPOSED ABOVE AND IN CONTACT WITH SAID FIRST LAYER SAID LAYERS BEING IN THE QUIESCENT STATE AT LEAST AT THE TIME OF THE INITIAL OPERATION OF SAID CELL, SAID ELECTROLYTE SYSTEM COVERING AT LEAST A PART OF EACH ELECTRODE.
Claim 2
Dependent Claim
98 words
A BROMINE-ZINC SECONDARY CELL COMPRISING: A CASE, A ZINC ELECTRODE AND A POROUS CARBON ELECTRODE, SAID ELECTRODES BEING SPACED APART AND DISPOSED WITHIN SAID CASE, AND AN ELECTROLYTE SYSTEM COMPRISING A FIRST LAYER OF A WATER-INSOLUBLE ORGANIC LIQUID HAVING ELEMENTAL BROMINE DISSOLVED THEREIN AND A SECOND LAYER COMPRISING AN AQUEOUS CONDUCTING SALT SOLUTION CONTAINING ZINC BROMIDE, SAID SECOND LAYER DISPOSED ABOVE AND IN CONTACT WITH SAID FIRST LAYER SAID LAYERS BEING IN THE QUIESCENT STATE AT LEAST AT THE TIME OF THE INITIAL OPERATION OF SAID CELL, SAID ELECTROLYTE SYSTEM COVERING AT LEAST A PART OF EACH ELECTRODE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-29 | 1972-04-29 | 1972-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-29 | 1976-04-29 | 1976-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-29 | 1980-04-29 | 1980-10-29 | $7700.00 | Window Closed / Lapsed |