US3704221A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Medium for ionic transport
Assignee: ROLAND A MCCULLY
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Filing: 1967-11-09
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Granted: 1972-11-28
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Expires: 1987-11-09
Abstract
Abstract IN AN ELECTROCHEMICAL DEVICE, SUCH AS A GALVANIC CELL, OR AN ELECTROYLIC CELL, THERE IS PROVIDED A NON-AQUEOUS MEDIUM WHICH SERVES AS A BARRIER TO LIQUID FLOW WHILE PERMITTING TRANSPORT OF IONS. THE MEDIUM IS MADE OF A POROUS INERT RETENTION AGENT IMPREGNATED WITH A NON-AQUEOUS SOLUTION OF AN IONIC MATERIAL CONTAINING THE ION TO BE TRANSPORTED. IN MOST CASES, THE POROUS INERT RETENTION AGENT IS MADE OF MINERAL FIBERS, WHICH MAY BE BONDED TOGETHER BY A FLUOROCARBON RESIN. LESS PREFERABLY, A POROUS STRUCTURE OF MINERAL PARTICLES BONDED TOGETHER BY A FLUOROCARBON RESIN MAY BE SUBSTITUTED FOR THE FIBROUS MATTE.
Inventors
- 👤 Charles Roland Mccully
- 👤 Roland A Mccully
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:07
CPC Classifications
H; H01; H01G; H01G9/00; H01G9/21; H01M; H01M10/00; H01M10/36; H01M12/00; H01M12/08; H01M12/085; H01M50/00; H01M50/40; H01M50/409; H01M50/411; H01M50/414; H01M50/426; H01M50/431; H01M50/434; H01M50/437; H01M50/44; H01M50/449; H01M50/489; H01M8/00; H01M50/491; 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) | 1975-11-28 | 1976-05-29 | 1976-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-28 | 1980-05-29 | 1980-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-28 | 1984-05-29 | 1984-11-28 | $7700.00 | Window Closed / Lapsed |