US2646456A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fabrication of storage battery plates
Assignee: SAFT Societe des Accumulateurs Fixes et de Traction SA
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Filing: 1951-07-10
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Granted: 1953-07-21
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Expires: 1971-07-10
Abstract
No abstract record available.
Inventors
- 👤 Pierre A C Jacquier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:11
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/64; H01M4/70; H01M4/80; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12181
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
THE METHOD OF MAKING HIGHLY POROUS METALLIC PLATES FOR USE AS ELECTRODES FOR ALKALINE STORAGE BATTERIES COMPRISING REDUCING IRON OXIDES TO PRODUCE NON-PYROPHORIC, FINELY-DIVIDED POROUS IRON POWDER, IMMERSING DETERMINED QUANTITIES OF SAID POWDER FOR A DETERMINED TIME IN A SOLUTION OF NICKEL SALTS FOR CHEMICAL EXCHANGE BETWEEN THE IRON OF THE IRON POWDER AND THE NICKEL OF THE SOLUTION SO THAT THE METALLIC NICKEL OF THE SOLUTION
Claim 2
Independent Claim
67 words
THE METHOD OF MAKING HIGHLY POROUS METALLIC PLATES FOR USE AS ELECTRODES FOR ALKALINE STORAGE BATTERIES COMPRISING REDUCING IRON OXIDES TO PRODUCE NON-PYROPHORIC, FINELY-DIVIDED POROUS IRON POWDER, IMMERSING DETERMINED QUANTITIES OF SAID POWDER FOR A DETERMINED TIME IN A SOLUTION OF NICKEL SALTS FOR CHEMICAL EXCHANGE BETWEEN THE IRON OF THE IRON POWDER AND THE NICKEL OF THE SOLUTION SO THAT THE METALLIC NICKEL OF THE SOLUTION
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-20 | 1957-01-19 | 1957-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-20 | 1961-01-19 | 1961-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-20 | 1965-01-19 | 1965-07-21 | $7700.00 | Window Closed / Lapsed |