US2832813A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrode for an alkali storage cell and a process of manufacturing same
Assignee: Accumulatoren Fabrik AG
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Filing: 1953-08-27
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Granted: 1958-04-29
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Expires: 1973-08-27
Abstract
No abstract record available.
Inventors
- 👤 Peters Freimut
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:33
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/24; H01M4/26; H01M4/30; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
NEGATIVE ELECTRODE OF AN ALKALINE STORAGE CELL WHICH ELECTRODE COMPRISES A HIGHLY COMPRESSED BODY, SAID COMPRESSED BODY CONSISTING OF A CONDUCTIVE METAL AND A NEGATIVE ACTIVE MATERIAL CONTAINING A METAL COMPOUND SELECTED FROM THE GROUP CONSISTING OF THE OXIDES AND HYDROXIDES OF ZINC, IRON, AND CADMIUM AND OF MIXTURES THEREOF, SAID ELECTRODE BODY OBTAINED BY COMPRESSING A MIXTURE OF SAID CONDUCTIVE METAL AND SAID ACTIVE MATERIAL IN FINELY POWDERED FROM AT A PRESSURE BETWEEN ABOUT 700 KG./SQ. CM. AND ABOUT 1400 KG./SQ. CM. AND BY SOLIDIFYING SAID COMPRESSED BODY INTO A POROUS METAL ELECTRODE STRUCTURE BY CATHODIC TREATMENT IN AN ALKALINE ELECTROLYTE SUBSEQUENT TO SAID PRESSURE TREATMENT, SAID METAL COMPOUND BEING PRESENT IN SAID COMPRESSED ELECTRODE BODY BEFORE SAID CATHODIC TREATMENT IN AN AMOUNT BETWEEN ABOUT 50% AND ABOUT 150% OF SAID CONDUCTIVE METAL POWDER.
Claim 2
Dependent Claim
135 words
NEGATIVE ELECTRODE OF AN ALKALINE STORAGE CELL WHICH ELECTRODE COMPRISES A HIGHLY COMPRESSED BODY, SAID COMPRESSED BODY CONSISTING OF A CONDUCTIVE METAL AND A NEGATIVE ACTIVE MATERIAL CONTAINING A METAL COMPOUND SELECTED FROM THE GROUP CONSISTING OF THE OXIDES AND HYDROXIDES OF ZINC, IRON, AND CADMIUM AND OF MIXTURES THEREOF, SAID ELECTRODE BODY OBTAINED BY COMPRESSING A MIXTURE OF SAID CONDUCTIVE METAL AND SAID ACTIVE MATERIAL IN FINELY POWDERED FROM AT A PRESSURE BETWEEN ABOUT 700 KG./SQ. CM. AND ABOUT 1400 KG./SQ. CM. AND BY SOLIDIFYING SAID COMPRESSED BODY INTO A POROUS METAL ELECTRODE STRUCTURE BY CATHODIC TREATMENT IN AN ALKALINE ELECTROLYTE SUBSEQUENT TO SAID PRESSURE TREATMENT, SAID METAL COMPOUND BEING PRESENT IN SAID COMPRESSED ELECTRODE BODY BEFORE SAID CATHODIC TREATMENT IN AN AMOUNT BETWEEN ABOUT 50% AND ABOUT 150% OF SAID CONDUCTIVE METAL POWDER.
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) | 1961-04-28 | 1961-10-28 | 1962-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-28 | 1965-10-28 | 1966-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-28 | 1969-10-28 | 1970-04-29 | $7700.00 | Window Closed / Lapsed |