US3423247A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Porous conductive electrode having at least two zones
Assignee: Union Carbide Corp
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Filing: 1964-05-19
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Granted: 1969-01-21
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Expires: 1984-05-19
Abstract
No abstract record available.
Inventors
- 👤 William G Darland Jr
- 👤 Karl V Kordesch
- 👤 Johannes A Van Lier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:20
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/86; H01M4/96; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
55 words
AN ELECTRODE WHICH COMPRISES A POROUS CONDUCTIVE BODY HAVING AT LEAST TWO ZONES: A FIRST ZONE EXTENDING INWARDLY FROM ONE SURFACE OF SAID BODY, BEING PERMEABLE TO LIQUID ELECTROLYTE, AND CONTAINING ELECTROCHEMICALLY ACTIVE PARTICLES WHICH ARE ACTIVATED CARBON, AND A SECOND ZONE ADJACENT TO SAID FIRST ZONE, REPELLENT TO LIQUID ELECTROLYTE, AND CONTAINING GRAPHITE PARTICLES.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-21 | 1972-07-22 | 1973-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-21 | 1976-07-22 | 1977-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-21 | 1980-07-22 | 1981-01-21 | $7700.00 | Window Closed / Lapsed |