US3668014A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrode and method of producing same
Assignee: Leesona Corp
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Filing: 1968-06-10
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Granted: 1972-06-06
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Expires: 1988-06-10
Abstract
Abstract A MAT OF POLYFLUOROCARBON FIBERS HAVING CONTROLLED PORE SIZE AND HYDROPHOBICITY IS IMPREGNATED WITH A CATALYTIC SUBSTANCE TO FORM A LIGHT-WEIGHT CATALYTIC MASS HAVING A LOW, UNIFORM LOADING OF THE CATALYTIC SUBSTANCE. THIS CATALYTIC MASS, PARTICULARLY WHEN COMBINED WITH AN ELECTRICALLY-CONDUCTING ELEMENT, AND/OR A CONTINUOUS HYDROPHOBIC POLYMER MEMBRANES IS SUITABLE FOR USE AS AN ELECTRODE IN AN ELECTROCHEMICAL CELL, E.G. AS A FUEL OR OXIDANT ELECTRODE IN A FUEL CELL OR AS THE CATHODE IN A METAL-AIR BATTERY, WHEREIN IT PROVIDES HIGH CURRENT DENSITIES AT RELATIVELY CONSTANT VOLTAGES OVER A LONG PERIOD OF TIME.
Inventors
- 👤 Emanuel G Katsoulis
- 👤 William S Pryor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:21
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/86; 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) | 1975-06-06 | 1975-12-06 | 1976-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-06 | 1979-12-06 | 1980-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-06 | 1983-12-06 | 1984-06-06 | $7700.00 | Window Closed / Lapsed |