Patent US2841632A successfully refreshed from Google Patents.
US2841632A
Expired / Lapsed
US
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Electrolyte additive for storage batteries
Assignee: Gould National Batteries Inc
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Filing: 1956-06-04
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Granted: 1958-07-01
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Expires: 1976-06-04
Abstract
No abstract record available.
Inventors
- 👤 James F Macholl
- 👤 Patterson Kenneth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:38
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/06; H01M10/08; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
IN A STORAGE BATTERY, A CELL, A LIQUID ELECTROLYTE IN THE CELL COMPRISING A SULPHURIC ACID SOLUTION OF A SPECIFIC GRAVITY BETWEEN 1.2 AND 1.3, POSITIVE AND NEGATIVE LEAD CONTAINING PLATES IN THE CELL AND IMMERSED IN THE ELECTROLYTE, A SEPARATOR OF CELLULOSE MATERIAL BETWEEN THE PLATES AND IMMERSED IN THE ELECTROLYTE, AND SAID SULPHURIC ACID SOLUTION HAVING DISSOLVED THEREIN COBALT SULPHATE IN THE PERCENTAGE RANGE OF .001% TO .020% BY WEIGHT OF COBALT PER VOLUME OF ACID AND SILVER SUPLHATE IN THE PERCENTAGE RANGE OF .05% TO .20% BY WEIGHT OF SILVER PER VOLUME OF ACID.
Claim 2
Dependent Claim
97 words
IN A STORAGE BATTERY, A CELL, A LIQUID ELECTROLYTE IN THE CELL COMPRISING A SULPHURIC ACID SOLUTION OF A SPECIFIC GRAVITY BETWEEN 1.2 AND 1.3, POSITIVE AND NEGATIVE LEAD CONTAINING PLATES IN THE CELL AND IMMERSED IN THE ELECTROLYTE, A SEPARATOR OF CELLULOSE MATERIAL BETWEEN THE PLATES AND IMMERSED IN THE ELECTROLYTE, AND SAID SULPHURIC ACID SOLUTION HAVING DISSOLVED THEREIN COBALT SULPHATE IN THE PERCENTAGE RANGE OF .001% TO .020% BY WEIGHT OF COBALT PER VOLUME OF ACID AND SILVER SUPLHATE IN THE PERCENTAGE RANGE OF .05% TO .20% BY WEIGHT OF SILVER PER VOLUME OF ACID.
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) | 1961-06-30 | 1961-12-30 | 1962-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-30 | 1965-12-30 | 1966-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-30 | 1969-12-30 | 1970-07-01 | $7700.00 | Window Closed / Lapsed |