US3347707A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Charged secondary cell
Assignee: Union Carbide Corp
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Filing: 1966-06-23
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Granted: 1967-10-17
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Expires: 1986-06-23
Abstract
No abstract record available.
Inventors
- 👤 Jr James Southworth
- 👤 Robert E Stark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:55
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/34; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
144 words
A CHEMICALLY-CHARGED SECONDARY CELL WHICH COMPRISES, IN COMBINATION, A CONTAINER; A MEANS FOR HERMETICALLY SEALING SAID CONTAINER; AT LEAST ONE PRESSED-POWDER POSITIVE ELECTRODE COMPRISING A MIXTURE OF A POSITIVE ACTIVE POWDER, A CATHODICALLY RECUCIBLE POWDER, AND AN INERT CONDUCTIVE POWDER COMPRESSED INTO A METAL GRID AND A PRESSED-POWDER NEGATIVE ELECTRODE COMPRISING A MIXTURE OF A NEGATIVE ACTIVE POWDER WITH AN INERT CONDUCTIVE POWDER COMPRESSED INTO A METAL GRID, BOTH POSITIVE AND A NEGATIVE ELECTRODES SITUATED WITHIN THE CONTAINER AND JUXTAPOSED RELATIVE TO EACH OTHER; A TOUGH, RESILIENT SEPARATOR RESISTANT TO ELECTROLYTE DETERIORATION INTERPOSED BETWEEN THE ELECTRODES AND IN INTIMATE CONTACE WITH THE LATERAL FACES THEREOF; AND AN ELECTROLYTE WHICH IS AN AQUEOUS SOLUTION OF AN ALKALI METAL HYDROXID SUBSTANTIALLY HELD WITHIN THE ELECTRODES AND THE SEPARATOR; THE POSITIVE ACTIVE POWDER CONSISTING ESSENTIALLY OF A STABLE NICKEL OXIDE HAVING A COMPOSITION REPRESENTED BY THE FORMULA
Claim 2
Dependent Claim
144 words
A CHEMICALLY-CHARGED SECONDARY CELL WHICH COMPRISES, IN COMBINATION, A CONTAINER; A MEANS FOR HERMETICALLY SEALING SAID CONTAINER; AT LEAST ONE PRESSED-POWDER POSITIVE ELECTRODE COMPRISING A MIXTURE OF A POSITIVE ACTIVE POWDER, A CATHODICALLY RECUCIBLE POWDER, AND AN INERT CONDUCTIVE POWDER COMPRESSED INTO A METAL GRID AND A PRESSED-POWDER NEGATIVE ELECTRODE COMPRISING A MIXTURE OF A NEGATIVE ACTIVE POWDER WITH AN INERT CONDUCTIVE POWDER COMPRESSED INTO A METAL GRID, BOTH POSITIVE AND A NEGATIVE ELECTRODES SITUATED WITHIN THE CONTAINER AND JUXTAPOSED RELATIVE TO EACH OTHER; A TOUGH, RESILIENT SEPARATOR RESISTANT TO ELECTROLYTE DETERIORATION INTERPOSED BETWEEN THE ELECTRODES AND IN INTIMATE CONTACE WITH THE LATERAL FACES THEREOF; AND AN ELECTROLYTE WHICH IS AN AQUEOUS SOLUTION OF AN ALKALI METAL HYDROXID SUBSTANTIALLY HELD WITHIN THE ELECTRODES AND THE SEPARATOR; THE POSITIVE ACTIVE POWDER CONSISTING ESSENTIALLY OF A STABLE NICKEL OXIDE HAVING A COMPOSITION REPRESENTED BY THE FORMULA
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) | 1970-10-16 | 1971-04-17 | 1971-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-16 | 1975-04-17 | 1975-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-16 | 1979-04-17 | 1979-10-17 | $7700.00 | Window Closed / Lapsed |