US2850555A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Positive electrodes for electric batteries and method of making same
Assignee: Exide Technologies LLC
•
Filing: 1953-11-06
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Granted: 1958-09-02
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Expires: 1973-11-06
Abstract
No abstract record available.
Inventors
- 👤 Leo E Pucher
- 👤 William A Cunningham
- 👤 Joseph F Szabo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:06
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/24; H01M4/34; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
THE METHOD OF FORMING THE ELECTRODES FOR SILVERZINC BATTERIES, SAID ELECTRODES COMPRISING RESPECTIVELY METALLIC SILVER AND ZINC OXIDES WHEN IN AN UNFORMED CONDITION, COMPRISING THE STEPS OF ELECTROFORMING SAID POSITIVE ELECTRODES AGAINST SAID NEGATIVE ELECTRODES TO CONVERT SAID METALLIC SILVER TO SILVER OXIDE, FOR A TOTAL ELECTRICAL IMPUT OF BETWEEN ABOUT 500 AMPERER HOURS TO ABOUT 800 A,PERE HOURS PER POUND OF SILVER, IN A SOLUTION OF 800 AMPERE HOURS PER POUND OF SILVER, IN A SOLUTION OF TRODES, INSERTING SAID POSITIVE ELECTRODES INTO A CONTAINER WITH DUMMY NEGATIVE ELECTRODES AND A SOLUTION OF ABOUT 10% POTASSIUM HYDROXIDE, AND SUBJECTING SAID POSITIVE ELECTRODES RO ADDITIONAL FORMATION WHEREBY SAID SILVER OXIDE IS SUBSTANTIALLY CONVERTED TO SILVER PEROXIDE
Claim 2
Independent Claim
116 words
THE METHOD OF FORMING THE ELECTRODES FOR SILVERZINC BATTERIES, SAID ELECTRODES COMPRISING RESPECTIVELY METALLIC SILVER AND ZINC OXIDES WHEN IN AN UNFORMED CONDITION, COMPRISING THE STEPS OF ELECTROFORMING SAID POSITIVE ELECTRODES AGAINST SAID NEGATIVE ELECTRODES TO CONVERT SAID METALLIC SILVER TO SILVER OXIDE, FOR A TOTAL ELECTRICAL IMPUT OF BETWEEN ABOUT 500 AMPERER HOURS TO ABOUT 800 A,PERE HOURS PER POUND OF SILVER, IN A SOLUTION OF 800 AMPERE HOURS PER POUND OF SILVER, IN A SOLUTION OF TRODES, INSERTING SAID POSITIVE ELECTRODES INTO A CONTAINER WITH DUMMY NEGATIVE ELECTRODES AND A SOLUTION OF ABOUT 10% POTASSIUM HYDROXIDE, AND SUBJECTING SAID POSITIVE ELECTRODES RO ADDITIONAL FORMATION WHEREBY SAID SILVER OXIDE IS SUBSTANTIALLY CONVERTED TO SILVER PEROXIDE
References Cited (Backward Citations)
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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) | 1961-09-01 | 1962-03-03 | 1962-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-01 | 1966-03-03 | 1966-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-01 | 1970-03-03 | 1970-09-02 | $7700.00 | Window Closed / Lapsed |