US2991325A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrolytes for rechargeable dry cell
Assignee: Union Carbide Corp
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Filing: 1958-06-17
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Granted: 1961-07-04
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Expires: 1978-06-17
Abstract
No abstract record available.
Inventors
- 👤 Kordesch Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:37
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/24; H01M10/26; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
IN A RECHARGEABLE DRY CELL EMPLOYING AS AN ELECTROLYTE AN AQUEOUS SOLUTION OF A HYDROXIDE OF AN ALKALI METAL IN CONJUNCTION WITH A CATHODE HAVING MANGANESE DIOXIDE AND AN ANODE CONSISTING OF ZINC, THE IMPROVEMENT CONSISTING IN ADDING TO SAID ELECTROLYTE AN IODINECONTAINING COMPOUND, SAID COMPOUND BEING PRESENT IN THE RANGE OF FROM 5 PERCENT OF SAID ELECTROLYTE TO ITS SATURATION POINT IN SAID ELECTROLYTE, SAID COMPOUND TENDING TO PREVENT THE DEVELOPMENT OF EXCESSIVE GAS PRESSURE UPON RECHARGE IF SAID CELL.
Claim 2
Dependent Claim
81 words
IN A RECHARGEABLE DRY CELL EMPLOYING AS AN ELECTROLYTE AN AQUEOUS SOLUTION OF A HYDROXIDE OF AN ALKALI METAL IN CONJUNCTION WITH A CATHODE HAVING MANGANESE DIOXIDE AND AN ANODE CONSISTING OF ZINC, THE IMPROVEMENT CONSISTING IN ADDING TO SAID ELECTROLYTE AN IODINECONTAINING COMPOUND, SAID COMPOUND BEING PRESENT IN THE RANGE OF FROM 5 PERCENT OF SAID ELECTROLYTE TO ITS SATURATION POINT IN SAID ELECTROLYTE, SAID COMPOUND TENDING TO PREVENT THE DEVELOPMENT OF EXCESSIVE GAS PRESSURE UPON RECHARGE IF SAID CELL.
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) | 1964-07-03 | 1965-01-02 | 1965-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-03 | 1969-01-02 | 1969-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-03 | 1973-01-02 | 1973-07-04 | $7700.00 | Window Closed / Lapsed |