US3700502A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High energy density battery
Assignee: Panasonic Holdings Corp
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Filing: 1971-04-21
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Granted: 1972-10-24
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Expires: 1991-04-21
Abstract
Abstract A BATTERY OF HIGH ENERGY DENSITY WHICH IS COMPOSED OF A NEGATIVE ELECTRODE CONSISTING MAINLY OF A LIGHT METAL, A NON-AQUEOUS ELECTROLYTE AND A POSITIVE ELECTRODE HAVING A SOLID FLUORINATED CARBON AS ACTIVE MATERIAL, SAID SOLID SLUORINATED CARBON BEING OBTAINED BY THE FLUORINATION OF AN AMORPHOUS CARBON, SUCH AS CHARCOAL, ACTIVE CARBON OR COKE; AND WHICH HAS SUCH ADVANTAGES THAT THE UTILITY OF THE POSITIVE ELECTRODE ACTIVE MATERIAL IS HIGH, THAT THE FLAT CHARACTERISTIC OF DISCHARGE VOLTAGE IS EXCELLENT, THAT THE SHELF LIFE IS LONG DUE TO THE CHEMICAL STABILITY IN THE ELECTROLYTE OF THE FLUORINATED CARBON USED AS ACTIVE MATERIAL, AND THAT THE COST IS LOW.
Inventors
- 👤 Nobuatsu Watanabe
- 👤 Masataro Fukoda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:08
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/05; C; C01; C01B; C01B32/00; C01B32/10; H01M4/00; H01M4/02; H01M4/36; H01M4/58; H01M4/583; H01M4/5835; H01M4/60; H01M6/00; H01M6/14; H01M6/16; 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) | 1975-10-24 | 1976-04-24 | 1976-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-24 | 1980-04-24 | 1980-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-24 | 1984-04-24 | 1984-10-24 | $7700.00 | Window Closed / Lapsed |