US3553032A
Expired / Lapsed
US
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Method of making a fuel cell electrode by thermal decomposition of silver carbonate
Assignee: Sony Corp
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Filing: 1969-01-21
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Granted: 1971-01-05
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Expires: 1989-01-21
Abstract
Abstract A METHOD OF MAKING A FUEL CELL ELECTRODE IS DISCLOSED BY FORMING A PRESSED LAYER OF A POLYMER, AN ELECTRICALLY CONDUCTIVE MATERIAL AND SILVER CARBONATE AND THERMALLY DECOMPOSING THE SILVER CARBONATE TO FORM SILVER AND RENDER THE LAYER POROUS.
Inventors
- 👤 Hideo Baba
- 👤 Yoshio Yamashita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 04:09
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/86; H01M4/88; H01M4/8875; H01M4/8647; H01M4/8657; H01M4/8878; H01M4/8882; H01M4/90; H01M4/8652; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50
Claims Analysis
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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) | 1974-01-04 | 1974-07-06 | 1975-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-04 | 1978-07-06 | 1979-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-04 | 1982-07-06 | 1983-01-05 | $7700.00 | Window Closed / Lapsed |