US3671319A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Battery electrode and battery embodying same
Assignee: McDonnell Douglas Corp
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Filing: 1969-08-04
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Granted: 1972-06-20
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Expires: 1989-08-04
Abstract
Abstract PRODUCTION OF ZINC ELECTRODE OF IMPROVED STRENGTH AND REDUCED SOLUBILITY IN ALKALI SOLUTION AND HAVING IMPROVED CAPACITY RETENTION DURING DEEP DISCHARGE CYCLING WHEN EMPLOYED IN A HIGH ENERGY DENSITY BATTERY, SUCH AS A SILVERZINC BATTERY, BY SINTERING A MIXTURE OF ZINC OXIDE AND CERTAIN ADDITIVE OXIDES SUCH AS ZIRCONIUM OXIDE, AND FORMING A SOLID SOLUTION OF A PORTION OF THE ZINC OXIDE AND SAID ADDITIVE OXIDE, SAID SINTERED SOLID SOLUTION FORMING A SUBSTANTIALLY INERT MATRIX AND THE REMAINDER OF SAID ZINC OXIDE BEING FREE ACTIVE ZINC OXIDE.
Inventors
- 👤 Frank C Arrance
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:57
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/24; H01M4/244; H01M4/26; H01M4/30; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-20 | 1975-12-20 | 1976-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-20 | 1979-12-20 | 1980-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-20 | 1983-12-20 | 1984-06-20 | $7700.00 | Window Closed / Lapsed |