US2643276A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Negative electrode for alkaline storage batteries and method of manufacturing the same
Assignee: SAFT Societe des Accumulateurs Fixes et de Traction SA
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Filing: 1951-01-22
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Granted: 1953-06-23
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Expires: 1971-01-22
Abstract
No abstract record available.
Inventors
- 👤 Salauze Jean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:39
CPC Classifications
H; H01; H01J; H01J31/00; H01J31/08; H01J31/26; H01J31/46; H01M; H01M4/00; H01M4/02; H01M4/24; H01M4/26; H01M4/30; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
85 words
A NEGATIVE ELECTRODE PLATE FOR AN ALKALINE ELECTRIC ACCUMULATOR WHICH COMPRISES A FRAME, AND A WIRE MESH-LIKE SUPPORTING ELEMENT CARRIED BY SAID FRAME, SAID WIRE MESH-LIKE ELEMENT BEING EMBEDDED IN A HIGHLY COMPRESSED MIXTURE OF NEGATIVE ACTIVE MATERIAL AND A FINELY DIVIDED COPPER COMPOSED OF MINUTE CRYSTALS HAVING AN ACICULAR, ARBORESCENT NEEDLELIKE OR DENDRITICAL SHAPE AND SAID NEGATIVE ACTIVE MATERIAL CONSISTING OF AN IRON PROVIDING SUBSTANCE WHICH IN SAID MIXTURE HAS THE PROPORTIONS OF BETWEEN 20% AND 80% AND PREFERABLY THE PROPORTION OF 50% THEREOF.
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) | 1956-06-22 | 1956-12-22 | 1957-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-22 | 1960-12-22 | 1961-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-22 | 1964-12-22 | 1965-06-23 | $7700.00 | Window Closed / Lapsed |