Patent US2994729A successfully refreshed from Google Patents.
US2994729A
Expired / Lapsed
US
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Electrochemical battery and negative electrode therefor
Assignee: Yardney International Corp
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Filing: 1957-11-07
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Granted: 1961-08-01
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Expires: 1977-11-07
Abstract
No abstract record available.
Inventors
- 👤 Solomon Frank
- 👤 Robert F Enters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:22
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/62; H01M4/621; H01M4/622; H01M4/24; H01M4/246; H01M4/624; H01M4/626; H01M4/04; H01M4/043; H01M4/0433; H01M4/64; H01M4/66; H01M4/661; H01M4/70; H01M4/72; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
AN ELECTRODE FOR ELECTROCHEMICAL BATTERIES, COMPRISING A COMPACTED COMMINUTED MASS COMPOSED TO AN EXTENT OF NOT LESS THAN SUBSTANTIALLY 90%, BY WEIGHT, OF AN ACTIVE MATERIAL SELECTED FROM THE GROUP WHICH CONSISTS OF CADMIUM AND CADMIUM OXIDES AND HYDROXIDES, SAID MASS FURTHER CONTAINING SILVER POWDER ADMIXED WITH SAID ACTIVE MATERIAL, SAID SILVER POWDER BEING PRESENT IN AN AMOUNT RANGING BETWEEN SUBSTANTIALLY 2% AND 10%, BY WEIGHT, OF SAID MASS.
Claim 2
Dependent Claim
69 words
AN ELECTRODE FOR ELECTROCHEMICAL BATTERIES, COMPRISING A COMPACTED COMMINUTED MASS COMPOSED TO AN EXTENT OF NOT LESS THAN SUBSTANTIALLY 90%, BY WEIGHT, OF AN ACTIVE MATERIAL SELECTED FROM THE GROUP WHICH CONSISTS OF CADMIUM AND CADMIUM OXIDES AND HYDROXIDES, SAID MASS FURTHER CONTAINING SILVER POWDER ADMIXED WITH SAID ACTIVE MATERIAL, SAID SILVER POWDER BEING PRESENT IN AN AMOUNT RANGING BETWEEN SUBSTANTIALLY 2% AND 10%, BY WEIGHT, OF SAID MASS.
References Cited (Backward Citations)
US670024A
Cited
US2519399A
Cited
US2646455A
Cited
US2737541A
Cited
US2616939A
Cited
US2830108A
Cited
US2832813A
Cited
US2773924A
Cited
US2719874A
Cited
US2708683A
Cited
US2727080A
Cited
US2724732A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-31 | 1965-01-30 | 1965-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-31 | 1969-01-30 | 1969-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-31 | 1973-01-30 | 1973-08-01 | $7700.00 | Window Closed / Lapsed |