US2745892A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of discharging electrolytic cells
Assignee: Eagle Picher Co
•
Filing: 1952-01-26
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Granted: 1956-05-15
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Expires: 1972-01-26
Abstract
No abstract record available.
Inventors
- 👤 Melvin F Chubb
- 👤 James M Dines
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:58
CPC Classifications
H; H01; H01M; H01M6/00; H01M6/04
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
120 words
AN IMPROVED METHOD OF ACTIVATING AN ELECTROLYTIC CELL HAVING A PASTED CUPROUS CHLORIDE POSTIVE ELECTRODE, A SHEET MAGNESIUM NEGATIVE ELECTRODE AND A BIBULOUS PAD BETWEEN THE ELECTRODES IN ORDER TO REDUCE THE RATE OF DECOMPOSITION OF THE CUPROUS CHLORIDE OF THE POSITIVE ELECTRODE AND TO PREVENT OVERHEATING OF THE CELL, SAID METHOD COMPRISING SATURATING THE BIBULOUS PAD OF THE CELL WITH AN AQUEOUS ELECTROLYTE WHICH CONTAINS SUBSTANTIALLY 5 TO 50% WATER MISCIBLE POLAR SOLVENT OF THE CLASS CONSISTING OF GLYCERIN, ETHYLENE GLYCOL, DIETHYLENE GLYCOL, PROPYLENE GLYCOL, AND DIPROPYLENE GLYCOL, WHEREBY THE SOLUBILITY OF THE CUPROUS CHLORIDE IN THE ELECTROLYTE IS REDUCED AND THE EXOTHERMIC HYDRATION OF THE MAGNESIUM CHLORIDE WHICH IS FORMED BY DECOMPOSITION OF THE NEGATIVE ELECTRODE IS RETARDED.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-15 | 1959-11-14 | 1960-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-15 | 1963-11-14 | 1964-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-15 | 1967-11-14 | 1968-05-15 | $7700.00 | Window Closed / Lapsed |