US3679482A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Iron electrode
Assignee: Westinghouse Electric Corp
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Filing: 1971-02-05
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Granted: 1972-07-25
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Expires: 1991-02-05
Abstract
Abstract A NEGATIVE ELECTRODE PLATE, FOR A BATTERY CONTAINING AT LEAST ONE POSITIVE AND ONE NEGATIVE ELECTRODE PLATE, WITH ELECTROLYTE CONTACTING THE PLATES, IS MADE BY DEPOSITING A SOLUBLE COBALT SALT IN A SULFUR ACTIVATED IRON NEGATIVE ELECTRODE PLATE AND REACTING THE DEPOSIT WITH ALKALI HYDROXIDE.
Inventors
- 👤 Carl C Hardman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:37
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/64; H01M4/70; H01M4/80; H01M4/806; H01M4/24; H01M4/248; H01M4/36; H01M4/362; H01M4/364; H01M4/04; H01M4/049; H01M4/48; H01M4/52; H01M4/66; H01M4/661; 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) | 1975-07-25 | 1976-01-24 | 1976-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-25 | 1980-01-24 | 1980-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-25 | 1984-01-24 | 1984-07-25 | $7700.00 | Window Closed / Lapsed |