Patent FR509186A successfully refreshed from Google Patents.
Patent US3351490A successfully refreshed from Google Patents.
US3351490A
Expired / Lapsed
US
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Hermetically sealed alkaline storage battery
Assignee: VARTA AG
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Filing: 1964-03-20
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Granted: 1967-11-07
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Expires: 1984-03-20
Abstract
No abstract record available.
Inventors
- 👤 Doehren Hermann-Hans Von
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:46
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/36; H01M4/48; H01M4/52; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
142 words
IN A HERMETICALLY SEALED ALKALINE STORAGE BATTERY, IN COMBINATION, POSITIVE AND NEGATIVE ELECTRODES; AND AN ALKALINE ELECTOLYTE IN CONTACT WITH SAID ELECTRODES, SAID POSITIVE ELECTRODE INCLUDING A MAJOR PROPORTION OF NICKEL OXIDE AND A MINOR PROPORTION OF A CURRENT CONDUCTING MATERIAL SELECTED FROM THE GROUP CONSISTING OF NICKEL AND GRAPHITE AND HAVING DISTRIBUTED THERETHROUGH BETWEEN 0.01% AND 2% BY WEIGHT OF SAID ACTIVE MASS OF AT LEAST ONE SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF OXIDES AND HYDROXIDES OF LANTHANUM, CERIUM, GALLIUM, INDIUM AND THALLIUM AND WHICH IS INSOLUBLE IN SAID ELECTROLYTE AND CAPABLE OF ALTERNATING BETWEEN A HIGHER AND A LOWER VALENCY SO AS TO FORM WITHIN SAID POSITIVE ELECTRODE AN AUXILIARY REDOX SYSTEM SUCH THAT THE OXYGEN POTENTIAL RELATIVE TO SAID AUXILIARY REDOX SYSTEM IS AT LEAST EQUAL TO THE OXYGEN POTENTIAL OF SAID NICKEL OXIDE OF SAID POSITIVE ELECTRODE.
Claim 2
Dependent Claim
142 words
IN A HERMETICALLY SEALED ALKALINE STORAGE BATTERY, IN COMBINATION, POSITIVE AND NEGATIVE ELECTRODES; AND AN ALKALINE ELECTOLYTE IN CONTACT WITH SAID ELECTRODES, SAID POSITIVE ELECTRODE INCLUDING A MAJOR PROPORTION OF NICKEL OXIDE AND A MINOR PROPORTION OF A CURRENT CONDUCTING MATERIAL SELECTED FROM THE GROUP CONSISTING OF NICKEL AND GRAPHITE AND HAVING DISTRIBUTED THERETHROUGH BETWEEN 0.01% AND 2% BY WEIGHT OF SAID ACTIVE MASS OF AT LEAST ONE SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF OXIDES AND HYDROXIDES OF LANTHANUM, CERIUM, GALLIUM, INDIUM AND THALLIUM AND WHICH IS INSOLUBLE IN SAID ELECTROLYTE AND CAPABLE OF ALTERNATING BETWEEN A HIGHER AND A LOWER VALENCY SO AS TO FORM WITHIN SAID POSITIVE ELECTRODE AN AUXILIARY REDOX SYSTEM SUCH THAT THE OXYGEN POTENTIAL RELATIVE TO SAID AUXILIARY REDOX SYSTEM IS AT LEAST EQUAL TO THE OXYGEN POTENTIAL OF SAID NICKEL OXIDE OF SAID POSITIVE ELECTRODE.
References Cited (Backward Citations)
US1167485A
Cited
US2980747A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-11-06 | 1971-05-08 | 1971-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-06 | 1975-05-08 | 1975-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-06 | 1979-05-08 | 1979-11-07 | $7700.00 | Window Closed / Lapsed |