US2857447A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hermetically closed storage cell
Assignee: Svenska Ackumulator Jungner AB
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Filing: 1955-07-25
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Granted: 1958-10-21
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Expires: 1975-07-25
Abstract
No abstract record available.
Inventors
- 👤 Lindstrom Karl Goran Hugo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:16
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
95 words
A METHOD OF MANUFACTURING HERMETICALLY-SEALED ALKALINE SOTRAGE CELLS HAVING AN ELECTROLYTE AND POSITIVE AND NEGATIVE MAN POROUS GAS-ABSORBING ELECTRODES, COMPRISING THE STEPS OF MOUNTING THE MAIN ELECTRODES IN THE CELL VESSEL, THEN COMPLETELY CHARGING THE POSITIVE AND NEGATIVE MAIN ELECTRODES, THEN SEALING THE VESSEL HERMETICALLY, AND THEREAFTER CONTROLLABLY PARTIALLY DISCHARGING BY OXYGEN ABSORPTION THE NEGATIVE MAIN ELECTRODE BY AT LEAST 10% OF ITS FULL CAPACITY BY OXIDATION MEANS IN THE CELL VESSEL CAPABLE OF BEING REDUCED PRIOR TO USE OF THE CELL IN NORMAL OPERATION WHILE MAINTAINING THE FULL CHARGE ON SAID POSITIVE MAIN ELECTRODE.
Claim 2
Independent Claim
95 words
A METHOD OF MANUFACTURING HERMETICALLY-SEALED ALKALINE SOTRAGE CELLS HAVING AN ELECTROLYTE AND POSITIVE AND NEGATIVE MAN POROUS GAS-ABSORBING ELECTRODES, COMPRISING THE STEPS OF MOUNTING THE MAIN ELECTRODES IN THE CELL VESSEL, THEN COMPLETELY CHARGING THE POSITIVE AND NEGATIVE MAIN ELECTRODES, THEN SEALING THE VESSEL HERMETICALLY, AND THEREAFTER CONTROLLABLY PARTIALLY DISCHARGING BY OXYGEN ABSORPTION THE NEGATIVE MAIN ELECTRODE BY AT LEAST 10% OF ITS FULL CAPACITY BY OXIDATION MEANS IN THE CELL VESSEL CAPABLE OF BEING REDUCED PRIOR TO USE OF THE CELL IN NORMAL OPERATION WHILE MAINTAINING THE FULL CHARGE ON SAID POSITIVE MAIN ELECTRODE.
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) | 1961-10-20 | 1962-04-21 | 1962-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-20 | 1966-04-21 | 1966-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-20 | 1970-04-21 | 1970-10-21 | $7700.00 | Window Closed / Lapsed |