US3733221A
Expired / Lapsed
US
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Gas diffusion electrode
Assignee: Westinghouse Electric Corp
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Filing: 1971-01-27
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Granted: 1973-05-15
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Expires: 1991-01-27
Abstract
Abstract A GAS DIFFUSION ELECTRODE FOR USE WITH A LIQUID ELECTROLYTE IN AN ELECTROCHEMICAL CELL, WHICH ELCTRODE INCLUDES A POROUS ELECTRICAL CONDUCTOR BETWEEN TWO POROUS LAYERS. THE FIRST POROUS LAYER ON THE LIQUID ELECTROLYTE SIDE IS COMPOSED OF A CONDUCTING MATERIAL AND A BINDER. THE SECOND LAYER OF A THICKNESS OF FROM 3 TO 7 MILS IS ON THE GAS SIDE AND CONTAINS A CONDUCTING MATERIAL, A BINDER, AND A CATALYST, AND IT IS LESS THAN ABOUT ONE-HALF AS THICK AS THE FIRST LAYER AND MORE HYDROPHOBIC, WHEREBY GAS DIFFUSION RATES ARE OPTIMIZED AND THE CATALYST IS EMPLOYED IN A HIGHLY EFFICIENT MANNER.
Inventors
- 👤 Y Sandler
- 👤 D Durigon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:30
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/86; H01M4/96; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50
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) | 1976-05-14 | 1976-11-13 | 1977-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-14 | 1980-11-13 | 1981-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-14 | 1984-11-13 | 1985-05-15 | $7700.00 | Window Closed / Lapsed |